25254157 has 4 divisors (see below), whose sum is σ = 26125020. Its totient is φ = 24383296.

The previous prime is 25254143. The next prime is 25254179. The reversal of 25254157 is 75145252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20848356 + 4405801 = 4566^2 + 2099^2 .

It is a cyclic number.

It is not a de Polignac number, because 25254157 - 2¹⁵ = 25221389 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 (25254107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 435388 + ... + 435445.

It is an arithmetic number, because the mean of its divisors is an integer number (6531255).

Almost surely, 2^25254157 is an apocalyptic number.

It is an amenable number.

25254157 is a deficient number, since it is larger than the sum of its proper divisors (870863).

25254157 is an equidigital number, since it uses as much as digits as its factorization.

25254157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870862.

The product of its digits is 14000, while the sum is 31.

The square root of 25254157 is about 5025.3514304972. The cubic root of 25254157 is about 293.3893142411.

The spelling of 25254157 in words is "twenty-five million, two hundred fifty-four thousand, one hundred fifty-seven".