25242437232 has 120 divisors (see below), whose sum is σ = 76091558400. Its totient is φ = 7785880704.

The previous prime is 25242437219. The next prime is 25242437243. The reversal of 25242437232 is 23273424252.

25242437232 is a `hidden beast` number, since 252 + 4 + 2 + 4 + 372 + 32 = 666.

It is a super-2 number, since 2×25242437232² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10369 + ... + 224927.

It is an arithmetic number, because the mean of its divisors is an integer number (634096320).

Almost surely, 2^25242437232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25242437232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38045779200).

25242437232 is an abundant number, since it is smaller than the sum of its proper divisors (50849121168).

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

25242437232 is a wasteful number, since it uses less digits than its factorization.

25242437232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214635 (or 214626 counting only the distinct ones).

The product of its digits is 161280, while the sum is 36.

The spelling of 25242437232 in words is "twenty-five billion, two hundred forty-two million, four hundred thirty-seven thousand, two hundred thirty-two".