25818660130 has 16 divisors (see below), whose sum is σ = 46742224824. Its totient is φ = 10267767040.

The previous prime is 25818660073. The next prime is 25818660137. The reversal of 25818660130 is 3106681852.

It can be written as a sum of positive squares in 4 ways, for example, as 22131620289 + 3687039841 = 148767^2 + 60721^2 .

It is not an unprimeable number, because it can be changed into a prime (25818660137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7460311 + ... + 7463770.

Almost surely, 2^25818660130 is an apocalyptic number.

25818660130 is a deficient number, since it is larger than the sum of its proper divisors (20923564694).

25818660130 is a wasteful number, since it uses less digits than its factorization.

25818660130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14924261.

The product of its (nonzero) digits is 69120, while the sum is 40.

The spelling of 25818660130 in words is "twenty-five billion, eight hundred eighteen million, six hundred sixty thousand, one hundred thirty".