25138875140 has 24 divisors (see below), whose sum is σ = 52842491520. Its totient is φ = 10045863648.

The previous prime is 25138875067. The next prime is 25138875161. The reversal of 25138875140 is 4157883152.

It is a junction number, because it is equal to n+sod(n) for n = 25138875091 and 25138875100.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 584102 + ... + 625661.

It is an arithmetic number, because the mean of its divisors is an integer number (2201770480).

Almost surely, 2^25138875140 is an apocalyptic number.

25138875140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25138875140 is an abundant number, since it is smaller than the sum of its proper divisors (27703616380).

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

25138875140 is a wasteful number, since it uses less digits than its factorization.

25138875140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210811 (or 1210809 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 44.

The spelling of 25138875140 in words is "twenty-five billion, one hundred thirty-eight million, eight hundred seventy-five thousand, one hundred forty".