25651157 has 6 divisors (see below), whose sum is σ = 29839158. Its totient is φ = 21986664.

The previous prime is 25651133. The next prime is 25651183. The reversal of 25651157 is 75115652.

It can be written as a sum of positive squares in only one way, i.e., 25542916 + 108241 = 5054^2 + 329^2 .

It is not a de Polignac number, because 25651157 - 2¹⁴ = 25634773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25651127) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 261698 + ... + 261795.

It is an arithmetic number, because the mean of its divisors is an integer number (4973193).

Almost surely, 2^25651157 is an apocalyptic number.

It is an amenable number.

25651157 is a deficient number, since it is larger than the sum of its proper divisors (4188001).

25651157 is an equidigital number, since it uses as much as digits as its factorization.

25651157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523507 (or 523500 counting only the distinct ones).

The product of its digits is 10500, while the sum is 32.

The square root of 25651157 is about 5064.6971281608. The cubic root of 25651157 is about 294.9187059344.

The spelling of 25651157 in words is "twenty-five million, six hundred fifty-one thousand, one hundred fifty-seven".