25978872 has 32 divisors (see below), whose sum is σ = 65450880. Its totient is φ = 8592480.

The previous prime is 25978861. The next prime is 25978879. The reversal of 25978872 is 27887952.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25978879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 988 + ... + 7275.

It is an arithmetic number, because the mean of its divisors is an integer number (2045340).

Almost surely, 2^25978872 is an apocalyptic number.

It is an amenable number.

25978872 is an abundant number, since it is smaller than the sum of its proper divisors (39472008).

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

25978872 is a wasteful number, since it uses less digits than its factorization.

25978872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8403 (or 8399 counting only the distinct ones).

The product of its digits is 564480, while the sum is 48.

The square root of 25978872 is about 5096.9473216819. The cubic root of 25978872 is about 296.1693394319.

The spelling of 25978872 in words is "twenty-five million, nine hundred seventy-eight thousand, eight hundred seventy-two".