25559096406 has 32 divisors (see below), whose sum is σ = 52094845440. Its totient is φ = 8356998624.

The previous prime is 25559096359. The next prime is 25559096429. The reversal of 25559096406 is 60469095552.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2098771 + ... + 2110913.

It is an arithmetic number, because the mean of its divisors is an integer number (1627963920).

Almost surely, 2^25559096406 is an apocalyptic number.

25559096406 is an abundant number, since it is smaller than the sum of its proper divisors (26535749034).

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

25559096406 is a wasteful number, since it uses less digits than its factorization.

25559096406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18820.

The product of its (nonzero) digits is 2916000, while the sum is 51.

The spelling of 25559096406 in words is "twenty-five billion, five hundred fifty-nine million, ninety-six thousand, four hundred six".