25738765 has 16 divisors (see below), whose sum is σ = 35220528. Its totient is φ = 17888256.

The previous prime is 25738763. The next prime is 25738777. The reversal of 25738765 is 56783752.

It can be written as a sum of positive squares in 8 ways, for example, as 4338889 + 21399876 = 2083^2 + 4626^2 .

It is a cyclic number.

It is not a de Polignac number, because 25738765 - 2¹ = 25738763 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25738763) 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, 10542 + ... + 12751.

It is an arithmetic number, because the mean of its divisors is an integer number (2201283).

Almost surely, 2^25738765 is an apocalyptic number.

It is an amenable number.

25738765 is a deficient number, since it is larger than the sum of its proper divisors (9481763).

25738765 is a wasteful number, since it uses less digits than its factorization.

25738765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23328.

The product of its digits is 352800, while the sum is 43.

The square root of 25738765 is about 5073.3386443249. The cubic root of 25738765 is about 295.2540758511.

The spelling of 25738765 in words is "twenty-five million, seven hundred thirty-eight thousand, seven hundred sixty-five".