25055240 has 64 divisors (see below), whose sum is σ = 65957760. Its totient is φ = 8386560.

The previous prime is 25055237. The next prime is 25055267. The reversal of 25055240 is 4255052.

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, 11000 + ... + 13080.

It is an arithmetic number, because the mean of its divisors is an integer number (1030590).

Almost surely, 2^25055240 is an apocalyptic number.

25055240 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 25055240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32978880).

25055240 is an abundant number, since it is smaller than the sum of its proper divisors (40902520).

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

25055240 is a wasteful number, since it uses less digits than its factorization.

25055240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2142 (or 2138 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 25055240 is about 5005.5209519090. The cubic root of 25055240 is about 292.6169790464.

The spelling of 25055240 in words is "twenty-five million, fifty-five thousand, two hundred forty".