25055500122 has 48 divisors (see below), whose sum is σ = 56317209312. Its totient is φ = 8348916240.

The previous prime is 25055500103. The next prime is 25055500153. The reversal of 25055500122 is 22100555052.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1728288 + ... + 1742724.

It is an arithmetic number, because the mean of its divisors is an integer number (1173275194).

Almost surely, 2^25055500122 is an apocalyptic number.

25055500122 is an abundant number, since it is smaller than the sum of its proper divisors (31261709190).

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

25055500122 is a wasteful number, since it uses less digits than its factorization.

25055500122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18025 (or 18013 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The spelling of 25055500122 in words is "twenty-five billion, fifty-five million, five hundred thousand, one hundred twenty-two".