25977798 has 48 divisors (see below), whose sum is σ = 70177536. Its totient is φ = 6747120.

The previous prime is 25977773. The next prime is 25977829. The reversal of 25977798 is 89777952.

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, 7986 + ... + 10757.

It is an arithmetic number, because the mean of its divisors is an integer number (1462032).

Almost surely, 2^25977798 is an apocalyptic number.

25977798 is an abundant number, since it is smaller than the sum of its proper divisors (44199738).

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

25977798 is a wasteful number, since it uses less digits than its factorization.

25977798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18769 (or 18766 counting only the distinct ones).

The product of its digits is 2222640, while the sum is 54.

The square root of 25977798 is about 5096.8419634122. The cubic root of 25977798 is about 296.1652580351.

The spelling of 25977798 in words is "twenty-five million, nine hundred seventy-seven thousand, seven hundred ninety-eight".