25157131 has 2 divisors, whose sum is σ = 25157132. Its totient is φ = 25157130.

The previous prime is 25157117. The next prime is 25157137. The reversal of 25157131 is 13175152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25157131 - 2⁹ = 25156619 is a prime.

It is a super-2 number, since 2×25157131² = 1265762480302322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25157096 and 25157105.

It is not a weakly prime, because it can be changed into another prime (25157137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12578565 + 12578566.

It is an arithmetic number, because the mean of its divisors is an integer number (12578566).

Almost surely, 2^25157131 is an apocalyptic number.

25157131 is a deficient number, since it is larger than the sum of its proper divisors (1).

25157131 is an equidigital number, since it uses as much as digits as its factorization.

25157131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1050, while the sum is 25.

The square root of 25157131 is about 5015.6884871371. The cubic root of 25157131 is about 293.0130999358.

The spelling of 25157131 in words is "twenty-five million, one hundred fifty-seven thousand, one hundred thirty-one".