25121167 has 2 divisors, whose sum is σ = 25121168. Its totient is φ = 25121166.

The previous prime is 25121153. The next prime is 25121183. The reversal of 25121167 is 76112152.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25121167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25121147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12560583 + 12560584.

It is an arithmetic number, because the mean of its divisors is an integer number (12560584).

Almost surely, 2^25121167 is an apocalyptic number.

25121167 is a deficient number, since it is larger than the sum of its proper divisors (1).

25121167 is an equidigital number, since it uses as much as digits as its factorization.

25121167 is an evil number, because the sum of its binary digits is even.

The product of its digits is 840, while the sum is 25.

The square root of 25121167 is about 5012.1020540288. The cubic root of 25121167 is about 292.8734053007.

It can be divided in two parts, 2 and 5121167, that added together give a square (5121169 = 2263²).

The spelling of 25121167 in words is "twenty-five million, one hundred twenty-one thousand, one hundred sixty-seven".