42881725 has 6 divisors (see below), whose sum is σ = 53173370. Its totient is φ = 34305360.

The previous prime is 42881687. The next prime is 42881743. The reversal of 42881725 is 52718824.

It can be written as a sum of positive squares in 3 ways, for example, as 657721 + 42224004 = 811^2 + 6498^2 .

It is not a de Polignac number, because 42881725 - 2¹¹ = 42879677 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 857610 + ... + 857659.

Almost surely, 2^42881725 is an apocalyptic number.

It is an amenable number.

42881725 is a deficient number, since it is larger than the sum of its proper divisors (10291645).

42881725 is a wasteful number, since it uses less digits than its factorization.

42881725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1715279 (or 1715274 counting only the distinct ones).

The product of its digits is 35840, while the sum is 37.

The square root of 42881725 is about 6548.4139301055. The cubic root of 42881725 is about 350.0182983631.

The spelling of 42881725 in words is "forty-two million, eight hundred eighty-one thousand, seven hundred twenty-five".