25172510140 has 24 divisors (see below), whose sum is σ = 53347250880. Its totient is φ = 9976627008.

The previous prime is 25172510119. The next prime is 25172510141. The reversal of 25172510140 is 4101527152.

It is a junction number, because it is equal to n+sod(n) for n = 25172510099 and 25172510108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25172510141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5771332 + ... + 5775691.

It is an arithmetic number, because the mean of its divisors is an integer number (2222802120).

Almost surely, 2^25172510140 is an apocalyptic number.

25172510140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25172510140 is an abundant number, since it is smaller than the sum of its proper divisors (28174740740).

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

25172510140 is a wasteful number, since it uses less digits than its factorization.

25172510140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11547141 (or 11547139 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 28.

The spelling of 25172510140 in words is "twenty-five billion, one hundred seventy-two million, five hundred ten thousand, one hundred forty".