25172460 has 72 divisors (see below), whose sum is σ = 77117040. Its totient is φ = 6645888.

The previous prime is 25172449. The next prime is 25172471. The reversal of 25172460 is 6427152.

It is an interprime number because it is at equal distance from previous prime (25172449) and next prime (25172471).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18979 + ... + 20261.

It is an arithmetic number, because the mean of its divisors is an integer number (1071070).

Almost surely, 2^25172460 is an apocalyptic number.

25172460 is a gapful number since it is divisible by the number (20) 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 25172460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38558520).

25172460 is an abundant number, since it is smaller than the sum of its proper divisors (51944580).

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

25172460 is a wasteful number, since it uses less digits than its factorization.

25172460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407 (or 1402 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 25172460 is about 5017.2163596959. The cubic root of 25172460 is about 293.0726017635.

The spelling of 25172460 in words is "twenty-five million, one hundred seventy-two thousand, four hundred sixty".