42725164 has 12 divisors (see below), whose sum is σ = 74855088. Its totient is φ = 21338000.

The previous prime is 42725153. The next prime is 42725171. The reversal of 42725164 is 46152724.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1912 + ... + 9439.

It is an arithmetic number, because the mean of its divisors is an integer number (6237924).

Almost surely, 2^42725164 is an apocalyptic number.

It is an amenable number.

42725164 is a deficient number, since it is larger than the sum of its proper divisors (32129924).

42725164 is a wasteful number, since it uses less digits than its factorization.

42725164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12296 (or 12294 counting only the distinct ones).

The product of its digits is 13440, while the sum is 31.

The square root of 42725164 is about 6536.4488829945. The cubic root of 42725164 is about 349.5918071170.

Subtracting from 42725164 its product of digits (13440), we obtain a palindrome (42711724).

Adding to 42725164 its reverse (46152724), we get a palindrome (88877888).

The spelling of 42725164 in words is "forty-two million, seven hundred twenty-five thousand, one hundred sixty-four".