25791015 has 16 divisors (see below), whose sum is σ = 42144768. Its totient is φ = 13462176.

The previous prime is 25790987. The next prime is 25791061. The reversal of 25791015 is 51019752.

It is not a de Polignac number, because 25791015 - 2⁸ = 25790759 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 17587 + ... + 18996.

It is an arithmetic number, because the mean of its divisors is an integer number (2634048).

Almost surely, 2^25791015 is an apocalyptic number.

25791015 is a deficient number, since it is larger than the sum of its proper divisors (16353753).

25791015 is a wasteful number, since it uses less digits than its factorization.

25791015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36638.

The product of its (nonzero) digits is 3150, while the sum is 30.

The square root of 25791015 is about 5078.4855025883. The cubic root of 25791015 is about 295.4537305769.

The spelling of 25791015 in words is "twenty-five million, seven hundred ninety-one thousand, fifteen".