25161207 has 12 divisors (see below), whose sum is σ = 35639016. Its totient is φ = 15786880.

The previous prime is 25161163. The next prime is 25161209. The reversal of 25161207 is 70216152.

It is not a de Polignac number, because 25161207 - 2⁷ = 25161079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25161209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13644 + ... + 15377.

It is an arithmetic number, because the mean of its divisors is an integer number (2969918).

Almost surely, 2^25161207 is an apocalyptic number.

25161207 is a deficient number, since it is larger than the sum of its proper divisors (10477809).

25161207 is a wasteful number, since it uses less digits than its factorization.

25161207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29058 (or 29041 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 25161207 is about 5016.0947957550. The cubic root of 25161207 is about 293.0289239036.

Adding to 25161207 its reverse (70216152), we get a palindrome (95377359).

The spelling of 25161207 in words is "twenty-five million, one hundred sixty-one thousand, two hundred seven".