25734189 has 16 divisors (see below), whose sum is σ = 38897600. Its totient is φ = 15002496.

The previous prime is 25734161. The next prime is 25734271. The reversal of 25734189 is 98143752.

It is not a de Polignac number, because 25734189 - 2⁹ = 25733677 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25734109) 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 15 ways as a sum of consecutive naturals, for example, 16624 + ... + 18105.

It is an arithmetic number, because the mean of its divisors is an integer number (2431100).

Almost surely, 2^25734189 is an apocalyptic number.

It is an amenable number.

25734189 is a deficient number, since it is larger than the sum of its proper divisors (13163411).

25734189 is a wasteful number, since it uses less digits than its factorization.

25734189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34764.

The product of its digits is 60480, while the sum is 39.

The square root of 25734189 is about 5072.8876392051. The cubic root of 25734189 is about 295.2365774367.

It can be divided in two parts, 2 and 5734189, that added together give a triangular number (5734191 = T₃₃₈₆).

The spelling of 25734189 in words is "twenty-five million, seven hundred thirty-four thousand, one hundred eighty-nine".