42906625 has 8 divisors (see below), whose sum is σ = 53547624. Its totient is φ = 34325200.

The previous prime is 42906587. The next prime is 42906637. The reversal of 42906625 is 52660924.

It can be written as a sum of positive squares in 4 ways, for example, as 278784 + 42627841 = 528^2 + 6529^2 .

It is not a de Polignac number, because 42906625 - 2⁷ = 42906497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171502 + ... + 171751.

It is an arithmetic number, because the mean of its divisors is an integer number (6693453).

Almost surely, 2^42906625 is an apocalyptic number.

It is an amenable number.

42906625 is a deficient number, since it is larger than the sum of its proper divisors (10640999).

42906625 is an equidigital number, since it uses as much as digits as its factorization.

42906625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343268 (or 343258 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 42906625 is about 6550.3148779276. The cubic root of 42906625 is about 350.0860332723.

The spelling of 42906625 in words is "forty-two million, nine hundred six thousand, six hundred twenty-five".