25226980 has 24 divisors (see below), whose sum is σ = 56093688. Its totient is φ = 9497088.

The previous prime is 25226953. The next prime is 25226983. The reversal of 25226980 is 8962252.

It can be written as a sum of positive squares in 4 ways, for example, as 306916 + 24920064 = 554^2 + 4992^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (25226983) 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, 36759 + ... + 37438.

It is an arithmetic number, because the mean of its divisors is an integer number (2337237).

Almost surely, 2^25226980 is an apocalyptic number.

25226980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25226980 is an abundant number, since it is smaller than the sum of its proper divisors (30866708).

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

25226980 is a wasteful number, since it uses less digits than its factorization.

25226980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74223 (or 74221 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 25226980 is about 5022.6467126407. The cubic root of 25226980 is about 293.2840338407.

The spelling of 25226980 in words is "twenty-five million, two hundred twenty-six thousand, nine hundred eighty".