25298878 has 32 divisors (see below), whose sum is σ = 43338240. Its totient is φ = 10973760.

The previous prime is 25298869. The next prime is 25298879. The reversal of 25298878 is 87889252.

Its product of digits (645120) is a multiple of the sum of its prime divisors (672).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25298879) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44178 + ... + 44746.

It is an arithmetic number, because the mean of its divisors is an integer number (1354320).

Almost surely, 2^25298878 is an apocalyptic number.

25298878 is a deficient number, since it is larger than the sum of its proper divisors (18039362).

25298878 is a wasteful number, since it uses less digits than its factorization.

25298878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672.

The product of its digits is 645120, while the sum is 49.

The square root of 25298878 is about 5029.7990019483. The cubic root of 25298878 is about 293.5623936841.

The spelling of 25298878 in words is "twenty-five million, two hundred ninety-eight thousand, eight hundred seventy-eight".