25361980 has 24 divisors (see below), whose sum is σ = 60869088. Its totient is φ = 8695488.

The previous prime is 25361971. The next prime is 25362019. The reversal of 25361980 is 8916352.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90439 + ... + 90718.

It is an arithmetic number, because the mean of its divisors is an integer number (2536212).

Almost surely, 2^25361980 is an apocalyptic number.

25361980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25361980 is an abundant number, since it is smaller than the sum of its proper divisors (35507108).

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

25361980 is a wasteful number, since it uses less digits than its factorization.

25361980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181173 (or 181171 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 25361980 is about 5036.0679105826. The cubic root of 25361980 is about 293.8062647618.

The spelling of 25361980 in words is "twenty-five million, three hundred sixty-one thousand, nine hundred eighty".