25392789 has 6 divisors (see below), whose sum is σ = 36678486. Its totient is φ = 16928520.

The previous prime is 25392769. The next prime is 25392791. The reversal of 25392789 is 98729352.

It can be written as a sum of positive squares in only one way, i.e., 24830289 + 562500 = 4983^2 + 750^2 .

It is not a de Polignac number, because 25392789 - 2¹⁵ = 25360021 is a prime.

It is a super-3 number, since 3×25392789³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25392739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1410702 + ... + 1410719.

It is an arithmetic number, because the mean of its divisors is an integer number (6113081).

Almost surely, 2^25392789 is an apocalyptic number.

It is an amenable number.

25392789 is a deficient number, since it is larger than the sum of its proper divisors (11285697).

25392789 is a wasteful number, since it uses less digits than its factorization.

25392789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2821427 (or 2821424 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 25392789 is about 5039.1258170441. The cubic root of 25392789 is about 293.9251857394.

It can be divided in two parts, 253927 and 89, that added together give a square (254016 = 504²).

The spelling of 25392789 in words is "twenty-five million, three hundred ninety-two thousand, seven hundred eighty-nine".