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25130430 = 23251347457
BaseRepresentation
bin101111111011…
…1010110111110
31202021202110200
41133313112332
522413133210
62254344330
7423414363
oct137672676
952252420
1025130430
1113204956
1284bb0a6
13528b6a0
1434a246a
1523160c0
hex17f75be

25130430 has 96 divisors (see below), whose sum is σ = 72019584. Its totient is φ = 6041088.

The previous prime is 25130419. The next prime is 25130431. The reversal of 25130430 is 3403152.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25130431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 54762 + ... + 55218.

It is an arithmetic number, because the mean of its divisors is an integer number (750204).

Almost surely, 225130430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25130430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36009792).

25130430 is an abundant number, since it is smaller than the sum of its proper divisors (46889154).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25130430 is a wasteful number, since it uses less digits than its factorization.

25130430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530 (or 527 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 25130430 is about 5013.0260322484. The cubic root of 25130430 is about 292.9093982276.

Adding to 25130430 its reverse (3403152), we get a palindrome (28533582).

The spelling of 25130430 in words is "twenty-five million, one hundred thirty thousand, four hundred thirty".

Divisors: 1 2 3 5 6 9 10 13 15 18 26 30 39 45 47 65 78 90 94 117 130 141 195 234 235 282 390 423 457 470 585 611 705 846 914 1170 1222 1371 1410 1833 2115 2285 2742 3055 3666 4113 4230 4570 5499 5941 6110 6855 8226 9165 10998 11882 13710 17823 18330 20565 21479 27495 29705 35646 41130 42958 53469 54990 59410 64437 89115 106938 107395 128874 178230 193311 214790 267345 279227 322185 386622 534690 558454 644370 837681 966555 1396135 1675362 1933110 2513043 2792270 4188405 5026086 8376810 12565215 25130430