22501425402 has 32 divisors (see below), whose sum is σ = 50023166400. Its totient is φ = 7497475344.

The previous prime is 22501425391. The next prime is 22501425449. The reversal of 22501425402 is 20452410522.

22501425402 is a `hidden beast` number, since 2 + 250 + 1 + 4 + 2 + 5 + 402 = 666.

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 15 ways as a sum of consecutive naturals, for example, 55048 + ... + 219164.

It is an arithmetic number, because the mean of its divisors is an integer number (1563223950).

Almost surely, 2^22501425402 is an apocalyptic number.

22501425402 is an abundant number, since it is smaller than the sum of its proper divisors (27521740998).

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

22501425402 is a wasteful number, since it uses less digits than its factorization.

22501425402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166667 (or 166661 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

Adding to 22501425402 its reverse (20452410522), we get a palindrome (42953835924).

The spelling of 22501425402 in words is "twenty-two billion, five hundred one million, four hundred twenty-five thousand, four hundred two".