25455504402 has 12 divisors (see below), whose sum is σ = 55153592910. Its totient is φ = 8485168128.

The previous prime is 25455504329. The next prime is 25455504407. The reversal of 25455504402 is 20440555452.

25455504402 is a `hidden beast` number, since 25 + 45 + 550 + 4 + 40 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 22668614721 + 2786889681 = 150561^2 + 52791^2 .

It is not an unprimeable number, because it can be changed into a prime (25455504407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 707097327 + ... + 707097362.

Almost surely, 2^25455504402 is an apocalyptic number.

25455504402 is an abundant number, since it is smaller than the sum of its proper divisors (29698088508).

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

25455504402 is a wasteful number, since it uses less digits than its factorization.

25455504402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414194697 (or 1414194694 counting only the distinct ones).

The product of its (nonzero) digits is 160000, while the sum is 36.

The spelling of 25455504402 in words is "twenty-five billion, four hundred fifty-five million, five hundred four thousand, four hundred two".