25243980 has 48 divisors (see below), whose sum is σ = 74844000. Its totient is φ = 6335488.

The previous prime is 25243957. The next prime is 25243993. The reversal of 25243980 is 8934252.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11355 + ... + 13394.

It is an arithmetic number, because the mean of its divisors is an integer number (1559250).

Almost surely, 2^25243980 is an apocalyptic number.

25243980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25243980 is an abundant number, since it is smaller than the sum of its proper divisors (49600020).

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

25243980 is a wasteful number, since it uses less digits than its factorization.

25243980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24778 (or 24776 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 25243980 is about 5024.3387624642. The cubic root of 25243980 is about 293.3498986283.

The spelling of 25243980 in words is "twenty-five million, two hundred forty-three thousand, nine hundred eighty".