42415625 has 36 divisors (see below), whose sum is σ = 61894476. Its totient is φ = 28980000.

The previous prime is 42415601. The next prime is 42415627. The reversal of 42415625 is 52651424.

It can be written as a sum of positive squares in 6 ways, for example, as 39778249 + 2637376 = 6307^2 + 1624^2 .

It is not a de Polignac number, because 42415625 - 2⁸ = 42415369 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42415627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 152987 + ... + 153263.

It is an arithmetic number, because the mean of its divisors is an integer number (1719291).

Almost surely, 2^42415625 is an apocalyptic number.

It is an amenable number.

42415625 is a deficient number, since it is larger than the sum of its proper divisors (19478851).

42415625 is an frugal number, since it uses more digits than its factorization.

42415625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316 (or 289 counting only the distinct ones).

The product of its digits is 9600, while the sum is 29.

The square root of 42415625 is about 6512.7279230749. The cubic root of 42415625 is about 348.7455089498.

The spelling of 42415625 in words is "forty-two million, four hundred fifteen thousand, six hundred twenty-five".