25325731 has 2 divisors, whose sum is σ = 25325732. Its totient is φ = 25325730.

The previous prime is 25325719. The next prime is 25325749. The reversal of 25325731 is 13752352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25325731 - 2⁷ = 25325603 is a prime.

It is a super-2 number, since 2×25325731² = 1282785301368722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25325731.

It is not a weakly prime, because it can be changed into another prime (25325711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12662865 + 12662866.

It is an arithmetic number, because the mean of its divisors is an integer number (12662866).

Almost surely, 2^25325731 is an apocalyptic number.

25325731 is a deficient number, since it is larger than the sum of its proper divisors (1).

25325731 is an equidigital number, since it uses as much as digits as its factorization.

25325731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6300, while the sum is 28.

The square root of 25325731 is about 5032.4676849434. The cubic root of 25325731 is about 293.6662223137. Note that the first 3 decimals are identical.

The spelling of 25325731 in words is "twenty-five million, three hundred twenty-five thousand, seven hundred thirty-one".