25797667 has 6 divisors (see below), whose sum is σ = 30009588. Its totient is φ = 22112244.

The previous prime is 25797661. The next prime is 25797671. The reversal of 25797667 is 76679752.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-25797667 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 526483 = 25797667 / (2 + 5 + 7 + 9 + 7 + 6 + 6 + 7).

It is a self number, because there is not a number n which added to its sum of digits gives 25797667.

It is not an unprimeable number, because it can be changed into a prime (25797661) 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, 263193 + ... + 263290.

It is an arithmetic number, because the mean of its divisors is an integer number (5001598).

Almost surely, 2^25797667 is an apocalyptic number.

25797667 is a deficient number, since it is larger than the sum of its proper divisors (4211921).

25797667 is an equidigital number, since it uses as much as digits as its factorization.

25797667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526497 (or 526490 counting only the distinct ones).

The product of its digits is 1111320, while the sum is 49.

The square root of 25797667 is about 5079.1403800250. The cubic root of 25797667 is about 295.4791294645.

The spelling of 25797667 in words is "twenty-five million, seven hundred ninety-seven thousand, six hundred sixty-seven".