25724617 has 2 divisors, whose sum is σ = 25724618. Its totient is φ = 25724616.

The previous prime is 25724609. The next prime is 25724623. The reversal of 25724617 is 71642752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22099401 + 3625216 = 4701^2 + 1904^2 .

It is a cyclic number.

It is not a de Polignac number, because 25724617 - 2³ = 25724609 is a prime.

It is not a weakly prime, because it can be changed into another prime (25724687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12862308 + 12862309.

It is an arithmetic number, because the mean of its divisors is an integer number (12862309).

Almost surely, 2^25724617 is an apocalyptic number.

It is an amenable number.

25724617 is a deficient number, since it is larger than the sum of its proper divisors (1).

25724617 is an equidigital number, since it uses as much as digits as its factorization.

25724617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23520, while the sum is 34.

The square root of 25724617 is about 5071.9441045816. The cubic root of 25724617 is about 295.1999678383.

The spelling of 25724617 in words is "twenty-five million, seven hundred twenty-four thousand, six hundred seventeen".