42389925 has 24 divisors (see below), whose sum is σ = 74209536. Its totient is φ = 21277440.

The previous prime is 42389917. The next prime is 42389929. The reversal of 42389925 is 52998324.

It is not a de Polignac number, because 42389925 - 2³ = 42389917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42389929) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15349 + ... + 17898.

It is an arithmetic number, because the mean of its divisors is an integer number (3092064).

Almost surely, 2^42389925 is an apocalyptic number.

It is an amenable number.

42389925 is a deficient number, since it is larger than the sum of its proper divisors (31819611).

42389925 is a wasteful number, since it uses less digits than its factorization.

42389925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33277 (or 33272 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The square root of 42389925 is about 6510.7545645647. The cubic root of 42389925 is about 348.6750587294.

The spelling of 42389925 in words is "forty-two million, three hundred eighty-nine thousand, nine hundred twenty-five".