25785315 has 12 divisors (see below), whose sum is σ = 44694624. Its totient is φ = 13752144.

The previous prime is 25785259. The next prime is 25785317. The reversal of 25785315 is 51358752.

It is not a de Polignac number, because 25785315 - 2⁸ = 25785059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25785315.

It is not an unprimeable number, because it can be changed into a prime (25785317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 286459 + ... + 286548.

It is an arithmetic number, because the mean of its divisors is an integer number (3724552).

Almost surely, 2^25785315 is an apocalyptic number.

25785315 is a deficient number, since it is larger than the sum of its proper divisors (18909309).

25785315 is a wasteful number, since it uses less digits than its factorization.

25785315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573018 (or 573015 counting only the distinct ones).

The product of its digits is 42000, while the sum is 36.

The square root of 25785315 is about 5077.9242806485. The cubic root of 25785315 is about 295.4319631727.

The spelling of 25785315 in words is "twenty-five million, seven hundred eighty-five thousand, three hundred fifteen".