25623829856 has 24 divisors (see below), whose sum is σ = 53102017080. Its totient is φ = 12137603328.

The previous prime is 25623829813. The next prime is 25623829873. The reversal of 25623829856 is 65892832652.

It is a super-3 number, since 3×25623829856³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21071621 + ... + 21072836.

It is an arithmetic number, because the mean of its divisors is an integer number (2212584045).

Almost surely, 2^25623829856 is an apocalyptic number.

It is an amenable number.

25623829856 is an abundant number, since it is smaller than the sum of its proper divisors (27478187224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25623829856 is a wasteful number, since it uses less digits than its factorization.

25623829856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42144486 (or 42144478 counting only the distinct ones).

The product of its digits is 12441600, while the sum is 56.

The spelling of 25623829856 in words is "twenty-five billion, six hundred twenty-three million, eight hundred twenty-nine thousand, eight hundred fifty-six".