25149538832 has 40 divisors (see below), whose sum is σ = 53754282720. Its totient is φ = 11303156480.

The previous prime is 25149538831. The next prime is 25149538859. The reversal of 25149538832 is 23883594152.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (25149538831) 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, 787118 + ... + 818445.

It is an arithmetic number, because the mean of its divisors is an integer number (1343857068).

Almost surely, 2^25149538832 is an apocalyptic number.

25149538832 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25149538832 is an abundant number, since it is smaller than the sum of its proper divisors (28604743888).

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

25149538832 is a wasteful number, since it uses less digits than its factorization.

25149538832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605671 (or 1605665 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 50.

The spelling of 25149538832 in words is "twenty-five billion, one hundred forty-nine million, five hundred thirty-eight thousand, eight hundred thirty-two".