25149574532 has 12 divisors (see below), whose sum is σ = 45529402380. Its totient is φ = 12141173856.

The previous prime is 25149574531. The next prime is 25149574573. The reversal of 25149574532 is 23547594152.

It can be written as a sum of positive squares in 2 ways, for example, as 16490155396 + 8659419136 = 128414^2 + 93056^2 .

It is not an unprimeable number, because it can be changed into a prime (25149574531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108403223 + ... + 108403454.

It is an arithmetic number, because the mean of its divisors is an integer number (3794116865).

Almost surely, 2^25149574532 is an apocalyptic number.

It is an amenable number.

25149574532 is a deficient number, since it is larger than the sum of its proper divisors (20379827848).

25149574532 is a wasteful number, since it uses less digits than its factorization.

25149574532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216806710 (or 216806708 counting only the distinct ones).

The product of its digits is 1512000, while the sum is 47.

The spelling of 25149574532 in words is "twenty-five billion, one hundred forty-nine million, five hundred seventy-four thousand, five hundred thirty-two".