25912513 has 12 divisors (see below), whose sum is σ = 29723904. Its totient is φ = 22530200.

The previous prime is 25912499. The next prime is 25912541. The reversal of 25912513 is 31521952.

It is a de Polignac number, because none of the positive numbers 2^k-25912513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25912013) 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 11 ways as a sum of consecutive naturals, for example, 1873 + ... + 7438.

It is an arithmetic number, because the mean of its divisors is an integer number (2476992).

Almost surely, 2^25912513 is an apocalyptic number.

25912513 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

25912513 is a deficient number, since it is larger than the sum of its proper divisors (3811391).

25912513 is a wasteful number, since it uses less digits than its factorization.

25912513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9356 (or 9345 counting only the distinct ones).

The product of its digits is 2700, while the sum is 28.

The square root of 25912513 is about 5090.4334785949. The cubic root of 25912513 is about 295.9169515309.

The spelling of 25912513 in words is "twenty-five million, nine hundred twelve thousand, five hundred thirteen".