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25085070 = 23251671669
BaseRepresentation
bin101111110110…
…0010010001110
31202012110020200
41133230102032
522410210240
62253354330
7423135213
oct137542216
952173220
1025085070
111318386a
1284989a6
135273b4a
14348db0a
152307930
hex17ec48e

25085070 has 48 divisors (see below), whose sum is σ = 65651040. Its totient is φ = 6645312.

The previous prime is 25085069. The next prime is 25085077. The reversal of 25085070 is 7058052.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25085077) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14196 + ... + 15864.

It is an arithmetic number, because the mean of its divisors is an integer number (1367730).

Almost surely, 225085070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25085070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32825520).

25085070 is an abundant number, since it is smaller than the sum of its proper divisors (40565970).

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

25085070 is a wasteful number, since it uses less digits than its factorization.

25085070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1849 (or 1846 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 25085070 is about 5008.4997753818. The cubic root of 25085070 is about 292.7330599235.

The spelling of 25085070 in words is "twenty-five million, eighty-five thousand, seventy".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 167 334 501 835 1002 1503 1669 1670 2505 3006 3338 5007 5010 7515 8345 10014 15021 15030 16690 25035 30042 50070 75105 150210 278723 557446 836169 1393615 1672338 2508507 2787230 4180845 5017014 8361690 12542535 25085070