25615259 has 2 divisors, whose sum is σ = 25615260. Its totient is φ = 25615258.

The previous prime is 25615223. The next prime is 25615297. The reversal of 25615259 is 95251652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25615259 - 2⁸ = 25615003 is a prime.

It is a super-2 number, since 2×25615259² = 1312282987274162, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (25615559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12807629 + 12807630.

It is an arithmetic number, because the mean of its divisors is an integer number (12807630).

Almost surely, 2^25615259 is an apocalyptic number.

25615259 is a deficient number, since it is larger than the sum of its proper divisors (1).

25615259 is an equidigital number, since it uses as much as digits as its factorization.

25615259 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27000, while the sum is 35.

The square root of 25615259 is about 5061.1519439748. The cubic root of 25615259 is about 294.7810651739.

The spelling of 25615259 in words is "twenty-five million, six hundred fifteen thousand, two hundred fifty-nine".