25317629 has 2 divisors, whose sum is σ = 25317630. Its totient is φ = 25317628.

The previous prime is 25317619. The next prime is 25317637. The reversal of 25317629 is 92671352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23136100 + 2181529 = 4810^2 + 1477^2 .

It is a cyclic number.

It is not a de Polignac number, because 25317629 - 2⁸ = 25317373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25317619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12658814 + 12658815.

It is an arithmetic number, because the mean of its divisors is an integer number (12658815).

Almost surely, 2^25317629 is an apocalyptic number.

It is an amenable number.

25317629 is a deficient number, since it is larger than the sum of its proper divisors (1).

25317629 is an equidigital number, since it uses as much as digits as its factorization.

25317629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 35.

The square root of 25317629 is about 5031.6626476742. The cubic root of 25317629 is about 293.6349032112.

The spelling of 25317629 in words is "twenty-five million, three hundred seventeen thousand, six hundred twenty-nine".