25779895 has 16 divisors (see below), whose sum is σ = 32421312. Its totient is φ = 19641600.

The previous prime is 25779893. The next prime is 25779899. The reversal of 25779895 is 59897752.

It is not a de Polignac number, because 25779895 - 2¹ = 25779893 is a prime.

It is a super-2 number, since 2×25779895² = 1329205972422050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25779893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42595 + ... + 43195.

It is an arithmetic number, because the mean of its divisors is an integer number (2026332).

Almost surely, 2^25779895 is an apocalyptic number.

25779895 is a deficient number, since it is larger than the sum of its proper divisors (6641417).

25779895 is a wasteful number, since it uses less digits than its factorization.

25779895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002.

The product of its digits is 1587600, while the sum is 52.

The square root of 25779895 is about 5077.3905699680. The cubic root of 25779895 is about 295.4112620689.

The spelling of 25779895 in words is "twenty-five million, seven hundred seventy-nine thousand, eight hundred ninety-five".