42637625 has 16 divisors (see below), whose sum is σ = 53419392. Its totient is φ = 33977200.

The previous prime is 42637619. The next prime is 42637633. The reversal of 42637625 is 52673624.

It is a de Polignac number, because none of the positive numbers 2^k-42637625 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42884 + ... + 43866.

It is an arithmetic number, because the mean of its divisors is an integer number (3338712).

Almost surely, 2^42637625 is an apocalyptic number.

It is an amenable number.

42637625 is a deficient number, since it is larger than the sum of its proper divisors (10781767).

42637625 is an equidigital number, since it uses as much as digits as its factorization.

42637625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345 (or 1335 counting only the distinct ones).

The product of its digits is 60480, while the sum is 35.

The square root of 42637625 is about 6529.7492294881. The cubic root of 42637625 is about 349.3528859225.

The spelling of 42637625 in words is "forty-two million, six hundred thirty-seven thousand, six hundred twenty-five".