25913536 has 28 divisors (see below), whose sum is σ = 56098440. Its totient is φ = 11778560.

The previous prime is 25913533. The next prime is 25913597. The reversal of 25913536 is 63531952.

It is a happy number.

It is a super-2 number, since 2×25913536² = 1343022696046592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25913533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17701 + ... + 19108.

Almost surely, 2^25913536 is an apocalyptic number.

It is an amenable number.

25913536 is an abundant number, since it is smaller than the sum of its proper divisors (30184904).

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

25913536 is a wasteful number, since it uses less digits than its factorization.

25913536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36832 (or 36822 counting only the distinct ones).

The product of its digits is 24300, while the sum is 34.

The square root of 25913536 is about 5090.5339602050. The cubic root of 25913536 is about 295.9208456477.

The spelling of 25913536 in words is "twenty-five million, nine hundred thirteen thousand, five hundred thirty-six".