25112004066 has 12 divisors (see below), whose sum is σ = 54409342182. Its totient is φ = 8370668016.

The previous prime is 25112004013. The next prime is 25112004083. The reversal of 25112004066 is 66040021152.

25112004066 is a `hidden beast` number, since 2 + 51 + 1 + 200 + 406 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 21183347025 + 3928657041 = 145545^2 + 62679^2 .

It is a super-2 number, since 2×25112004066² (a number of 22 digits) contains 22 as substring.

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, 697555651 + ... + 697555686.

Almost surely, 2^25112004066 is an apocalyptic number.

25112004066 is an abundant number, since it is smaller than the sum of its proper divisors (29297338116).

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

25112004066 is a wasteful number, since it uses less digits than its factorization.

25112004066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395111345 (or 1395111342 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The spelling of 25112004066 in words is "twenty-five billion, one hundred twelve million, four thousand, sixty-six".