25465839 has 24 divisors (see below), whose sum is σ = 39748608. Its totient is φ = 14459760.

The previous prime is 25465751. The next prime is 25465841. The reversal of 25465839 is 93856452.

It is not a de Polignac number, because 25465839 - 2¹⁹ = 24941551 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25465839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25465889) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27624 + ... + 28530.

It is an arithmetic number, because the mean of its divisors is an integer number (1656192).

Almost surely, 2^25465839 is an apocalyptic number.

25465839 is a deficient number, since it is larger than the sum of its proper divisors (14282769).

25465839 is a wasteful number, since it uses less digits than its factorization.

25465839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115 (or 1108 counting only the distinct ones).

The product of its digits is 259200, while the sum is 42.

The square root of 25465839 is about 5046.3688925801. The cubic root of 25465839 is about 294.2067706436.

It can be divided in two parts, 2546 and 5839, that added together give a triangular number (8385 = T₁₂₉).

The spelling of 25465839 in words is "twenty-five million, four hundred sixty-five thousand, eight hundred thirty-nine".