25753861 has 24 divisors (see below), whose sum is σ = 32503680. Its totient is φ = 20264832.

The previous prime is 25753853. The next prime is 25753879. The reversal of 25753861 is 16835752.

It is not a de Polignac number, because 25753861 - 2³ = 25753853 is a prime.

It is a super-2 number, since 2×25753861² = 1326522712814642, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25753861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25753801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35460 + ... + 36178.

It is an arithmetic number, because the mean of its divisors is an integer number (1354320).

Almost surely, 2^25753861 is an apocalyptic number.

It is an amenable number.

25753861 is a deficient number, since it is larger than the sum of its proper divisors (6749819).

25753861 is a wasteful number, since it uses less digits than its factorization.

25753861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793 (or 786 counting only the distinct ones).

The product of its digits is 50400, while the sum is 37.

The square root of 25753861 is about 5074.8262039207. The cubic root of 25753861 is about 295.3117875612.

The spelling of 25753861 in words is "twenty-five million, seven hundred fifty-three thousand, eight hundred sixty-one".