25013988 has 24 divisors (see below), whose sum is σ = 64851360. Its totient is φ = 8337960.

The previous prime is 25013983. The next prime is 25013999. The reversal of 25013988 is 88931052.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (25013983) 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, 115698 + ... + 115913.

It is an arithmetic number, because the mean of its divisors is an integer number (2702140).

Almost surely, 2^25013988 is an apocalyptic number.

It is an amenable number.

25013988 is an abundant number, since it is smaller than the sum of its proper divisors (39837372).

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

25013988 is a wasteful number, since it uses less digits than its factorization.

25013988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231624 (or 231616 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 25013988 is about 5001.3986043906. The cubic root of 25013988 is about 292.4562985335.

The spelling of 25013988 in words is "twenty-five million, thirteen thousand, nine hundred eighty-eight".