25288920 has 96 divisors (see below), whose sum is σ = 82836000. Its totient is φ = 6690816.

The previous prime is 25288919. The next prime is 25288931. The reversal of 25288920 is 2988252.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71464 + ... + 71816.

It is an arithmetic number, because the mean of its divisors is an integer number (862875).

Almost surely, 2^25288920 is an apocalyptic number.

25288920 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 25288920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41418000).

25288920 is an abundant number, since it is smaller than the sum of its proper divisors (57547080).

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

25288920 is a wasteful number, since it uses less digits than its factorization.

25288920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569 (or 562 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 25288920 is about 5028.8090041281. The cubic root of 25288920 is about 293.5238718446.

The spelling of 25288920 in words is "twenty-five million, two hundred eighty-eight thousand, nine hundred twenty".