25825128932 has 24 divisors (see below), whose sum is σ = 46106285400. Its totient is φ = 12654473216.

The previous prime is 25825128907. The next prime is 25825128943. The reversal of 25825128932 is 23982152852.

It can be written as a sum of positive squares in 4 ways, for example, as 319122496 + 25506006436 = 17864^2 + 159706^2 .

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, 280757 + ... + 361212.

It is an arithmetic number, because the mean of its divisors is an integer number (1921095225).

Almost surely, 2^25825128932 is an apocalyptic number.

It is an amenable number.

25825128932 is a deficient number, since it is larger than the sum of its proper divisors (20281156468).

25825128932 is a wasteful number, since it uses less digits than its factorization.

25825128932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642175 (or 642173 counting only the distinct ones).

The product of its digits is 691200, while the sum is 47.

The spelling of 25825128932 in words is "twenty-five billion, eight hundred twenty-five million, one hundred twenty-eight thousand, nine hundred thirty-two".