25172680 has 32 divisors (see below), whose sum is σ = 60996600. Its totient is φ = 9294336.

The previous prime is 25172677. The next prime is 25172689. The reversal of 25172680 is 8627152.

It can be written as a sum of positive squares in 4 ways, for example, as 23251684 + 1920996 = 4822^2 + 1386^2 .

It is not an unprimeable number, because it can be changed into a prime (25172689) 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, 23685 + ... + 24724.

Almost surely, 2^25172680 is an apocalyptic number.

25172680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25172680 is an abundant number, since it is smaller than the sum of its proper divisors (35823920).

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

25172680 is a wasteful number, since it uses less digits than its factorization.

25172680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48433 (or 48429 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 25172680 is about 5017.2382841559. The cubic root of 25172680 is about 293.0734555509.

It can be divided in two parts, 25172 and 680, that added together give a palindrome (25852).

The spelling of 25172680 in words is "twenty-five million, one hundred seventy-two thousand, six hundred eighty".