25802980 has 48 divisors (see below), whose sum is σ = 62737920. Its totient is φ = 8731008.

The previous prime is 25802977. The next prime is 25802983. The reversal of 25802980 is 8920852.

It is an interprime number because it is at equal distance from previous prime (25802977) and next prime (25802983).

It is not an unprimeable number, because it can be changed into a prime (25802983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9894 + ... + 12226.

It is an arithmetic number, because the mean of its divisors is an integer number (1307040).

Almost surely, 2^25802980 is an apocalyptic number.

25802980 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 25802980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31368960).

25802980 is an abundant number, since it is smaller than the sum of its proper divisors (36934940).

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

25802980 is a wasteful number, since it uses less digits than its factorization.

25802980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2428 (or 2426 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 25802980 is about 5079.6633746736. The cubic root of 25802980 is about 295.4994126017.

The spelling of 25802980 in words is "twenty-five million, eight hundred two thousand, nine hundred eighty".