25129667 has 2 divisors, whose sum is σ = 25129668. Its totient is φ = 25129666.

The previous prime is 25129651. The next prime is 25129681. The reversal of 25129667 is 76692152.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25129667 - 2⁴ = 25129651 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25129667.

It is not a weakly prime, because it can be changed into another prime (25129607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12564833 + 12564834.

It is an arithmetic number, because the mean of its divisors is an integer number (12564834).

Almost surely, 2^25129667 is an apocalyptic number.

25129667 is a deficient number, since it is larger than the sum of its proper divisors (1).

25129667 is an equidigital number, since it uses as much as digits as its factorization.

25129667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 38.

The square root of 25129667 is about 5012.9499299315. The cubic root of 25129667 is about 292.9064337985.

The spelling of 25129667 in words is "twenty-five million, one hundred twenty-nine thousand, six hundred sixty-seven".