25142052144 has 80 divisors (see below), whose sum is σ = 72583104384. Its totient is φ = 7432972800.

The previous prime is 25142052139. The next prime is 25142052167. The reversal of 25142052144 is 44125024152.

It is a super-2 number, since 2×25142052144² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 559054 + ... + 602349.

Almost surely, 2^25142052144 is an apocalyptic number.

25142052144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25142052144 is an abundant number, since it is smaller than the sum of its proper divisors (47441052240).

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

25142052144 is a wasteful number, since it uses less digits than its factorization.

25142052144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161466 (or 1161460 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

Adding to 25142052144 its reverse (44125024152), we get a palindrome (69267076296).

The spelling of 25142052144 in words is "twenty-five billion, one hundred forty-two million, fifty-two thousand, one hundred forty-four".