25651667 has 2 divisors, whose sum is σ = 25651668. Its totient is φ = 25651666.

The previous prime is 25651651. The next prime is 25651673. The reversal of 25651667 is 76615652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25651667 - 2⁴ = 25651651 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25651667.

It is not a weakly prime, because it can be changed into another prime (25651267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12825833 + 12825834.

It is an arithmetic number, because the mean of its divisors is an integer number (12825834).

Almost surely, 2^25651667 is an apocalyptic number.

25651667 is a deficient number, since it is larger than the sum of its proper divisors (1).

25651667 is an equidigital number, since it uses as much as digits as its factorization.

25651667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 38.

The square root of 25651667 is about 5064.7474764296. The cubic root of 25651667 is about 294.9206604602.

The spelling of 25651667 in words is "twenty-five million, six hundred fifty-one thousand, six hundred sixty-seven".