25317073 has 2 divisors, whose sum is σ = 25317074. Its totient is φ = 25317072.

The previous prime is 25317059. The next prime is 25317119. The reversal of 25317073 is 37071352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15000129 + 10316944 = 3873^2 + 3212^2 .

It is a cyclic number.

It is not a de Polignac number, because 25317073 - 2⁵ = 25317041 is a prime.

It is equal to p_1584460 and since 25317073 and 1584460 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (25317023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12658536 + 12658537.

It is an arithmetic number, because the mean of its divisors is an integer number (12658537).

Almost surely, 2^25317073 is an apocalyptic number.

It is an amenable number.

25317073 is a deficient number, since it is larger than the sum of its proper divisors (1).

25317073 is an equidigital number, since it uses as much as digits as its factorization.

25317073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4410, while the sum is 28.

The square root of 25317073 is about 5031.6073972439. The cubic root of 25317073 is about 293.6327536918.

It can be divided in two parts, 2531 and 7073, that added together give a square (9604 = 98²).

The spelling of 25317073 in words is "twenty-five million, three hundred seventeen thousand, seventy-three".