12502594225 has 81 divisors (see below), whose sum is σ = 18154463691. Its totient is φ = 8533720800.

The previous prime is 12502594217. The next prime is 12502594249. The reversal of 12502594225 is 52249520521.

The square root of 12502594225 is 111815.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 4500933921 + 8001660304 = 67089^2 + 89452^2 .

It is not a de Polignac number, because 12502594225 - 2³ = 12502594217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 116846622 + ... + 116846728.

Almost surely, 2^12502594225 is an apocalyptic number.

12502594225 is the 111815-th square number.

12502594225 is the 55908-th centered octagonal number.

It is an amenable number.

12502594225 is a deficient number, since it is larger than the sum of its proper divisors (5651869466).

12502594225 is a wasteful number, since it uses less digits than its factorization.

12502594225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 37.

The spelling of 12502594225 in words is "twelve billion, five hundred two million, five hundred ninety-four thousand, two hundred twenty-five".