25220680 has 32 divisors (see below), whose sum is σ = 58283640. Its totient is φ = 9815040.

The previous prime is 25220669. The next prime is 25220681. The reversal of 25220680 is 8602252.

It can be written as a sum of positive squares in 4 ways, for example, as 25220484 + 196 = 5022^2 + 14^2 .

It is not an unprimeable number, because it can be changed into a prime (25220681) 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, 7041 + ... + 10000.

Almost surely, 2^25220680 is an apocalyptic number.

25220680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25220680 is an abundant number, since it is smaller than the sum of its proper divisors (33062960).

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

25220680 is a wasteful number, since it uses less digits than its factorization.

25220680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17089 (or 17085 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 25220680 is about 5022.0195140999. The cubic root of 25220680 is about 293.2596176106.

The spelling of 25220680 in words is "twenty-five million, two hundred twenty thousand, six hundred eighty".