25978967 has 6 divisors (see below), whose sum is σ = 30220488. Its totient is φ = 22267644.

The previous prime is 25978963. The next prime is 25979017. The reversal of 25978967 is 76987952.

It is not a de Polignac number, because 25978967 - 2² = 25978963 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25978963) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 265043 + ... + 265140.

It is an arithmetic number, because the mean of its divisors is an integer number (5036748).

Almost surely, 2^25978967 is an apocalyptic number.

25978967 is a deficient number, since it is larger than the sum of its proper divisors (4241521).

25978967 is an equidigital number, since it uses as much as digits as its factorization.

25978967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530197 (or 530190 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 53.

The square root of 25978967 is about 5096.9566409770. The cubic root of 25978967 is about 296.1697004439.

The spelling of 25978967 in words is "twenty-five million, nine hundred seventy-eight thousand, nine hundred sixty-seven".