42620425 has 12 divisors (see below), whose sum is σ = 53178640. Its totient is φ = 33883920.

The previous prime is 42620423. The next prime is 42620447. The reversal of 42620425 is 52402624.

It is not a de Polignac number, because 42620425 - 2¹ = 42620423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 42620425.

It is not an unprimeable number, because it can be changed into a prime (42620423) 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, 1155 + ... + 9304.

Almost surely, 2^42620425 is an apocalyptic number.

It is an amenable number.

42620425 is a deficient number, since it is larger than the sum of its proper divisors (10558215).

42620425 is a wasteful number, since it uses less digits than its factorization.

42620425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10632 (or 10627 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 42620425 is about 6528.4320475900. The cubic root of 42620425 is about 349.3059033353.

The spelling of 42620425 in words is "forty-two million, six hundred twenty thousand, four hundred twenty-five".