25685109042522 has 64 divisors (see below), whose sum is σ = 54335686775040. Its totient is φ = 8078227520000.

The previous prime is 25685109042491. The next prime is 25685109042581. The reversal of 25685109042522 is 22524090158652.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 324022 + ... + 7174622.

It is an arithmetic number, because the mean of its divisors is an integer number (848995105860).

Almost surely, 2^{25685109042522} is an apocalyptic number.

25685109042522 is an abundant number, since it is smaller than the sum of its proper divisors (28650577732518).

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

25685109042522 is a wasteful number, since it uses less digits than its factorization.

25685109042522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6850999.

The product of its (nonzero) digits is 3456000, while the sum is 51.

The spelling of 25685109042522 in words is "twenty-five trillion, six hundred eighty-five billion, one hundred nine million, forty-two thousand, five hundred twenty-two".