25816395 has 32 divisors (see below), whose sum is σ = 46033920. Its totient is φ = 12247040.

The previous prime is 25816391. The next prime is 25816423. The reversal of 25816395 is 59361852.

It is not a de Polignac number, because 25816395 - 2² = 25816391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25816391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6091 + ... + 9419.

It is an arithmetic number, because the mean of its divisors is an integer number (1438560).

Almost surely, 2^25816395 is an apocalyptic number.

25816395 is a deficient number, since it is larger than the sum of its proper divisors (20217525).

25816395 is a wasteful number, since it uses less digits than its factorization.

25816395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3395.

The product of its digits is 64800, while the sum is 39.

The square root of 25816395 is about 5080.9836646067. The cubic root of 25816395 is about 295.5506138949.

It can be divided in two parts, 258 and 16395, that added together give a triangular number (16653 = T₁₈₂).

The spelling of 25816395 in words is "twenty-five million, eight hundred sixteen thousand, three hundred ninety-five".