25742991232 has 144 divisors (see below), whose sum is σ = 61658865360. Its totient is φ = 10674316800.

The previous prime is 25742991161. The next prime is 25742991299. The reversal of 25742991232 is 23219924752.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6025257 + ... + 6029527.

It is an arithmetic number, because the mean of its divisors is an integer number (428186565).

Almost surely, 2^25742991232 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 25742991232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30829432680).

25742991232 is an abundant number, since it is smaller than the sum of its proper divisors (35915874128).

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

25742991232 is an equidigital number, since it uses as much as digits as its factorization.

25742991232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4361 (or 4311 counting only the distinct ones).

The product of its digits is 544320, while the sum is 46.

The spelling of 25742991232 in words is "twenty-five billion, seven hundred forty-two million, nine hundred ninety-one thousand, two hundred thirty-two".