25398366 has 24 divisors (see below), whose sum is σ = 59090760. Its totient is φ = 7256592.

The previous prime is 25398353. The next prime is 25398367. The reversal of 25398366 is 66389352.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25398367) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42901 + ... + 43488.

It is an arithmetic number, because the mean of its divisors is an integer number (2462115).

Almost surely, 2^25398366 is an apocalyptic number.

25398366 is an abundant number, since it is smaller than the sum of its proper divisors (33692394).

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

25398366 is a wasteful number, since it uses less digits than its factorization.

25398366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86408 (or 86401 counting only the distinct ones).

The product of its digits is 233280, while the sum is 42.

The square root of 25398366 is about 5039.6791564543. The cubic root of 25398366 is about 293.9467023567.

The spelling of 25398366 in words is "twenty-five million, three hundred ninety-eight thousand, three hundred sixty-six".