42506625 has 32 divisors (see below), whose sum is σ = 80840448. Its totient is φ = 19430400.

The previous prime is 42506623. The next prime is 42506669. The reversal of 42506625 is 52660524.

It is not a de Polignac number, because 42506625 - 2¹ = 42506623 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42506592 and 42506601.

It is not an unprimeable number, because it can be changed into a prime (42506623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5472 + ... + 10721.

It is an arithmetic number, because the mean of its divisors is an integer number (2526264).

Almost surely, 2^42506625 is an apocalyptic number.

It is an amenable number.

42506625 is a deficient number, since it is larger than the sum of its proper divisors (38333823).

42506625 is a wasteful number, since it uses less digits than its factorization.

42506625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16218 (or 16208 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 42506625 is about 6519.7104997078. The cubic root of 42506625 is about 348.9947345013.

The spelling of 42506625 in words is "forty-two million, five hundred six thousand, six hundred twenty-five".