25457838 has 32 divisors (see below), whose sum is σ = 58406400. Its totient is φ = 7246560.

The previous prime is 25457819. The next prime is 25457867. The reversal of 25457838 is 83875452.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 25457838.

It is a congruent 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, 12088 + ... + 14036.

It is an arithmetic number, because the mean of its divisors is an integer number (1825200).

Almost surely, 2^25457838 is an apocalyptic number.

25457838 is an abundant number, since it is smaller than the sum of its proper divisors (32948562).

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

25457838 is a wasteful number, since it uses less digits than its factorization.

25457838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2272.

The product of its digits is 268800, while the sum is 42.

The square root of 25457838 is about 5045.5760820743. The cubic root of 25457838 is about 294.1759555722.

The spelling of 25457838 in words is "twenty-five million, four hundred fifty-seven thousand, eight hundred thirty-eight".