25112532144 has 120 divisors (see below), whose sum is σ = 77306645808. Its totient is φ = 6999982080.

The previous prime is 25112532139. The next prime is 25112532149. The reversal of 25112532144 is 44123521152.

It is an interprime number because it is at equal distance from previous prime (25112532139) and next prime (25112532149).

It is not an unprimeable number, because it can be changed into a prime (25112532149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33777 + ... + 226640.

Almost surely, 2^25112532144 is an apocalyptic number.

25112532144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25112532144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38653322904).

25112532144 is an abundant number, since it is smaller than the sum of its proper divisors (52194113664).

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

25112532144 is a wasteful number, since it uses less digits than its factorization.

25112532144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260483 (or 260470 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

The spelling of 25112532144 in words is "twenty-five billion, one hundred twelve million, five hundred thirty-two thousand, one hundred forty-four".