25998601056 has 48 divisors (see below), whose sum is σ = 71838244800. Its totient is φ = 8210083968.

The previous prime is 25998601051. The next prime is 25998601067. The reversal of 25998601056 is 65010689952.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25998601051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7124986 + ... + 7128633.

It is an arithmetic number, because the mean of its divisors is an integer number (1496630100).

Almost surely, 2^25998601056 is an apocalyptic number.

It is an amenable number.

25998601056 is an abundant number, since it is smaller than the sum of its proper divisors (45839643744).

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

25998601056 is a wasteful number, since it uses less digits than its factorization.

25998601056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14253651 (or 14253643 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 51.

The spelling of 25998601056 in words is "twenty-five billion, nine hundred ninety-eight million, six hundred one thousand, fifty-six".