20425357476 has 18 divisors (see below), whose sum is σ = 51630764822. Its totient is φ = 6808452480.

The previous prime is 20425357453. The next prime is 20425357553. The reversal of 20425357476 is 67475352402.

20425357476 is a `hidden beast` number, since 2 + 0 + 4 + 2 + 5 + 3 + 574 + 76 = 666.

It can be written as a sum of positive squares in only one way, i.e., 17311717476 + 3113640000 = 131574^2 + 55800^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 283685485 + ... + 283685556.

Almost surely, 2^20425357476 is an apocalyptic number.

It is an amenable number.

20425357476 is an abundant number, since it is smaller than the sum of its proper divisors (31205407346).

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

20425357476 is a wasteful number, since it uses less digits than its factorization.

20425357476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567371051 (or 567371046 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 45.

The spelling of 20425357476 in words is "twenty billion, four hundred twenty-five million, three hundred fifty-seven thousand, four hundred seventy-six".