42647925 has 24 divisors (see below), whose sum is σ = 71513280. Its totient is φ = 22422400.

The previous prime is 42647923. The next prime is 42647929. The reversal of 42647925 is 52974624.

It is not a de Polignac number, because 42647925 - 2¹ = 42647923 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42647921) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1321 + ... + 9329.

It is an arithmetic number, because the mean of its divisors is an integer number (2979720).

Almost surely, 2^42647925 is an apocalyptic number.

It is an amenable number.

42647925 is a deficient number, since it is larger than the sum of its proper divisors (28865355).

42647925 is a wasteful number, since it uses less digits than its factorization.

42647925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8093 (or 8088 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

The square root of 42647925 is about 6530.5378798381. The cubic root of 42647925 is about 349.3810147955.

The spelling of 42647925 in words is "forty-two million, six hundred forty-seven thousand, nine hundred twenty-five".