67431625 has 16 divisors (see below), whose sum is σ = 84389760. Its totient is φ = 53794800.

The previous prime is 67431619. The next prime is 67431667. The reversal of 67431625 is 52613476.

It is a happy number.

It is not a de Polignac number, because 67431625 - 2¹⁵ = 67398857 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 72916 + ... + 73834.

It is an arithmetic number, because the mean of its divisors is an integer number (5274360).

Almost surely, 2^67431625 is an apocalyptic number.

It is an amenable number.

67431625 is a deficient number, since it is larger than the sum of its proper divisors (16958135).

67431625 is an equidigital number, since it uses as much as digits as its factorization.

67431625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1521 (or 1511 counting only the distinct ones).

The product of its digits is 30240, while the sum is 34.

The square root of 67431625 is about 8211.6761382802. The cubic root of 67431625 is about 407.0251158167.

The spelling of 67431625 in words is "sixty-seven million, four hundred thirty-one thousand, six hundred twenty-five".