25657431074 has 16 divisors (see below), whose sum is σ = 42058694880. Its totient is φ = 11641966560.

The previous prime is 25657431073. The next prime is 25657431113. The reversal of 25657431074 is 47013475652.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (25657431073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1012304 + ... + 1037339.

It is an arithmetic number, because the mean of its divisors is an integer number (2628668430).

Almost surely, 2^25657431074 is an apocalyptic number.

25657431074 is a deficient number, since it is larger than the sum of its proper divisors (16401263806).

25657431074 is a wasteful number, since it uses less digits than its factorization.

25657431074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2050225.

The product of its (nonzero) digits is 705600, while the sum is 44.

The spelling of 25657431074 in words is "twenty-five billion, six hundred fifty-seven million, four hundred thirty-one thousand, seventy-four".