25912720 has 40 divisors (see below), whose sum is σ = 62870976. Its totient is φ = 9913728.

The previous prime is 25912687. The next prime is 25912723. The reversal of 25912720 is 2721952.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (25912723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5202 + ... + 8881.

Almost surely, 2^25912720 is an apocalyptic number.

25912720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25912720 is an abundant number, since it is smaller than the sum of its proper divisors (36958256).

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

25912720 is a wasteful number, since it uses less digits than its factorization.

25912720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14119 (or 14113 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 25912720 is about 5090.4538108110. The cubic root of 25912720 is about 295.9177394983.

The spelling of 25912720 in words is "twenty-five million, nine hundred twelve thousand, seven hundred twenty".