42931725 has 12 divisors (see below), whose sum is σ = 70980576. Its totient is φ = 22896880.

The previous prime is 42931723. The next prime is 42931747. The reversal of 42931725 is 52713924.

It is not a de Polignac number, because 42931725 - 2¹ = 42931723 is a prime.

It is a super-2 number, since 2×42931725² = 3686266022951250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42931723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 286137 + ... + 286286.

It is an arithmetic number, because the mean of its divisors is an integer number (5915048).

Almost surely, 2^42931725 is an apocalyptic number.

It is an amenable number.

42931725 is a deficient number, since it is larger than the sum of its proper divisors (28048851).

42931725 is a wasteful number, since it uses less digits than its factorization.

42931725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572436 (or 572431 counting only the distinct ones).

The product of its digits is 15120, while the sum is 33.

The square root of 42931725 is about 6552.2305362373. The cubic root of 42931725 is about 350.1542857198.

The spelling of 42931725 in words is "forty-two million, nine hundred thirty-one thousand, seven hundred twenty-five".