25265157 has 16 divisors (see below), whose sum is σ = 34440000. Its totient is φ = 16470144.

The previous prime is 25265147. The next prime is 25265171. The reversal of 25265157 is 75156252.

It is not a de Polignac number, because 25265157 - 2²² = 21070853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25265147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61569 + ... + 61977.

It is an arithmetic number, because the mean of its divisors is an integer number (2152500).

Almost surely, 2^25265157 is an apocalyptic number.

It is an amenable number.

25265157 is a deficient number, since it is larger than the sum of its proper divisors (9174843).

25265157 is a wasteful number, since it uses less digits than its factorization.

25265157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820.

The product of its digits is 21000, while the sum is 33.

The square root of 25265157 is about 5026.4457621663. The cubic root of 25265157 is about 293.4319054338.

The spelling of 25265157 in words is "twenty-five million, two hundred sixty-five thousand, one hundred fifty-seven".