25645530126 has 16 divisors (see below), whose sum is σ = 51319217664. Its totient is φ = 8543817144.

The previous prime is 25645530109. The next prime is 25645530161. The reversal of 25645530126 is 62103554652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1161376 + ... + 1183251.

It is an arithmetic number, because the mean of its divisors is an integer number (3207451104).

Almost surely, 2^25645530126 is an apocalyptic number.

25645530126 is an abundant number, since it is smaller than the sum of its proper divisors (25673687538).

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

25645530126 is a wasteful number, since it uses less digits than its factorization.

25645530126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2346455.

The product of its (nonzero) digits is 216000, while the sum is 39.

The spelling of 25645530126 in words is "twenty-five billion, six hundred forty-five million, five hundred thirty thousand, one hundred twenty-six".