25853731 has 2 divisors, whose sum is σ = 25853732. Its totient is φ = 25853730.

The previous prime is 25853717. The next prime is 25853743. The reversal of 25853731 is 13735852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25853731 - 2⁷ = 25853603 is a prime.

It is a super-2 number, since 2×25853731² = 1336830813240722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25853791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12926865 + 12926866.

It is an arithmetic number, because the mean of its divisors is an integer number (12926866).

Almost surely, 2^25853731 is an apocalyptic number.

25853731 is a deficient number, since it is larger than the sum of its proper divisors (1).

25853731 is an equidigital number, since it uses as much as digits as its factorization.

25853731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25200, while the sum is 34.

The square root of 25853731 is about 5084.6564289045. The cubic root of 25853731 is about 295.6930216232.

The spelling of 25853731 in words is "twenty-five million, eight hundred fifty-three thousand, seven hundred thirty-one".