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25285372 = 2272237179
BaseRepresentation
bin110000001110…
…1001011111100
31202120122000021
41200131023330
522433112442
62301541524
7424631200
oct140351374
952518007
1025285372
1113300302
1285748a4
135314078
143502b00
152346e67
hex181d2fc

25285372 has 72 divisors (see below), whose sum is σ = 55157760. Its totient is φ = 10090080.

The previous prime is 25285363. The next prime is 25285373. The reversal of 25285372 is 27358252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25285373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 320029 + ... + 320107.

It is an arithmetic number, because the mean of its divisors is an integer number (766080).

Almost surely, 225285372 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25285372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27578880).

25285372 is an abundant number, since it is smaller than the sum of its proper divisors (29872388).

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

25285372 is a wasteful number, since it uses less digits than its factorization.

25285372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191 (or 182 counting only the distinct ones).

The product of its digits is 33600, while the sum is 34.

The square root of 25285372 is about 5028.4562243297. The cubic root of 25285372 is about 293.5101442068.

The spelling of 25285372 in words is "twenty-five million, two hundred eighty-five thousand, three hundred seventy-two".

Divisors: 1 2 4 7 14 23 28 46 49 71 79 92 98 142 158 161 196 284 316 322 497 553 644 994 1106 1127 1633 1817 1988 2212 2254 3266 3479 3634 3871 4508 5609 6532 6958 7268 7742 11218 11431 12719 13916 15484 22436 22862 25438 39263 45724 50876 78526 80017 89033 129007 157052 160034 178066 258014 274841 320068 356132 516028 549682 903049 1099364 1806098 3612196 6321343 12642686 25285372