25904602478 has 16 divisors (see below), whose sum is σ = 40225315200. Its totient is φ = 12498559200.

The previous prime is 25904602463. The next prime is 25904602483. The reversal of 25904602478 is 87420640952.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 576953 + ... + 620228.

It is an arithmetic number, because the mean of its divisors is an integer number (2514082200).

Almost surely, 2^25904602478 is an apocalyptic number.

25904602478 is a deficient number, since it is larger than the sum of its proper divisors (14320712722).

25904602478 is a wasteful number, since it uses less digits than its factorization.

25904602478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197563.

The product of its (nonzero) digits is 967680, while the sum is 47.

The spelling of 25904602478 in words is "twenty-five billion, nine hundred four million, six hundred two thousand, four hundred seventy-eight".