42315625 has 24 divisors (see below), whose sum is σ = 57746304. Its totient is φ = 30750000.

The previous prime is 42315619. The next prime is 42315661. The reversal of 42315625 is 52651324.

It is not a de Polignac number, because 42315625 - 2⁹ = 42315113 is a prime.

It is a super-2 number, since 2×42315625² = 3581224238281250, which contains 22 as substring.

It is a nialpdrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 42315593 and 42315602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33760 + ... + 34990.

It is an arithmetic number, because the mean of its divisors is an integer number (2406096).

Almost surely, 2^42315625 is an apocalyptic number.

It is an amenable number.

42315625 is a deficient number, since it is larger than the sum of its proper divisors (15430679).

42315625 is an equidigital number, since it uses as much as digits as its factorization.

42315625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267 (or 1247 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 42315625 is about 6505.0461182070. The cubic root of 42315625 is about 348.4712232839.

Adding to 42315625 its reverse (52651324), we get a palindrome (94966949).

The spelling of 42315625 in words is "forty-two million, three hundred fifteen thousand, six hundred twenty-five".