25474122656 has 12 divisors (see below), whose sum is σ = 50152179042. Its totient is φ = 12737061312.

The previous prime is 25474122647. The next prime is 25474122659. The reversal of 25474122656 is 65622147452.

It can be written as a sum of positive squares in only one way, i.e., 14347248400 + 11126874256 = 119780^2 + 105484^2 .

It is not an unprimeable number, because it can be changed into a prime (25474122659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398033135 + ... + 398033198.

Almost surely, 2^25474122656 is an apocalyptic number.

It is an amenable number.

25474122656 is a deficient number, since it is larger than the sum of its proper divisors (24678056386).

25474122656 is an equidigital number, since it uses as much as digits as its factorization.

25474122656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796066343 (or 796066335 counting only the distinct ones).

The product of its digits is 806400, while the sum is 44.

The spelling of 25474122656 in words is "twenty-five billion, four hundred seventy-four million, one hundred twenty-two thousand, six hundred fifty-six".