42625525 has 6 divisors (see below), whose sum is σ = 52855682. Its totient is φ = 34100400.

The previous prime is 42625523. The next prime is 42625529. The reversal of 42625525 is 52552624.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 128164 + 42497361 = 358^2 + 6519^2 .

It is not a de Polignac number, because 42625525 - 2¹ = 42625523 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42625523) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 852486 + ... + 852535.

Almost surely, 2^42625525 is an apocalyptic number.

It is an amenable number.

42625525 is a deficient number, since it is larger than the sum of its proper divisors (10230157).

42625525 is a wasteful number, since it uses less digits than its factorization.

42625525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705031 (or 1705026 counting only the distinct ones).

The product of its digits is 24000, while the sum is 31.

The square root of 42625525 is about 6528.8226350545. The cubic root of 42625525 is about 349.3198355368.

The spelling of 42625525 in words is "forty-two million, six hundred twenty-five thousand, five hundred twenty-five".