25695731 has 2 divisors, whose sum is σ = 25695732. Its totient is φ = 25695730.

The previous prime is 25695727. The next prime is 25695737. The reversal of 25695731 is 13759652.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25695731 - 2² = 25695727 is a prime.

It is a super-2 number, since 2×25695731² = 1320541183248722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25695737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12847865 + 12847866.

It is an arithmetic number, because the mean of its divisors is an integer number (12847866).

Almost surely, 2^25695731 is an apocalyptic number.

25695731 is a deficient number, since it is larger than the sum of its proper divisors (1).

25695731 is an equidigital number, since it uses as much as digits as its factorization.

25695731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56700, while the sum is 38.

The square root of 25695731 is about 5069.0956787182. The cubic root of 25695731 is about 295.0894337669.

The spelling of 25695731 in words is "twenty-five million, six hundred ninety-five thousand, seven hundred thirty-one".