25519667 has 2 divisors, whose sum is σ = 25519668. Its totient is φ = 25519666.

The previous prime is 25519661. The next prime is 25519687. The reversal of 25519667 is 76691552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25519667 - 2⁴ = 25519651 is a prime.

It is not a weakly prime, because it can be changed into another prime (25519661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12759833 + 12759834.

It is an arithmetic number, because the mean of its divisors is an integer number (12759834).

Almost surely, 2^25519667 is an apocalyptic number.

25519667 is a deficient number, since it is larger than the sum of its proper divisors (1).

25519667 is an equidigital number, since it uses as much as digits as its factorization.

25519667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113400, while the sum is 41.

The square root of 25519667 is about 5051.6994170279. The cubic root of 25519667 is about 294.4139163423.

The spelling of 25519667 in words is "twenty-five million, five hundred nineteen thousand, six hundred sixty-seven".