25622731 has 2 divisors, whose sum is σ = 25622732. Its totient is φ = 25622730.

The previous prime is 25622719. The next prime is 25622741. The reversal of 25622731 is 13722652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25622731 - 2⁷ = 25622603 is a prime.

It is a super-2 number, since 2×25622731² = 1313048687796722, 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 25622731.

It is not a weakly prime, because it can be changed into another prime (25622741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12811365 + 12811366.

It is an arithmetic number, because the mean of its divisors is an integer number (12811366).

Almost surely, 2^25622731 is an apocalyptic number.

25622731 is a deficient number, since it is larger than the sum of its proper divisors (1).

25622731 is an equidigital number, since it uses as much as digits as its factorization.

25622731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 28.

The square root of 25622731 is about 5061.8900620223. The cubic root of 25622731 is about 294.8097250440.

The spelling of 25622731 in words is "twenty-five million, six hundred twenty-two thousand, seven hundred thirty-one".