67291625 has 8 divisors (see below), whose sum is σ = 83980104. Its totient is φ = 53833200.

The previous prime is 67291591. The next prime is 67291643. The reversal of 67291625 is 52619276.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11505664 + 55785961 = 3392^2 + 7469^2 .

It is not a de Polignac number, because 67291625 - 2⁶ = 67291561 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 269042 + ... + 269291.

It is an arithmetic number, because the mean of its divisors is an integer number (10497513).

Almost surely, 2^67291625 is an apocalyptic number.

It is an amenable number.

67291625 is a deficient number, since it is larger than the sum of its proper divisors (16688479).

67291625 is an equidigital number, since it uses as much as digits as its factorization.

67291625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538348 (or 538338 counting only the distinct ones).

The product of its digits is 45360, while the sum is 38.

The square root of 67291625 is about 8203.1472618746. The cubic root of 67291625 is about 406.7432352316.

It can be divided in two parts, 672916 and 25, that multiplied together give a triangular number (16822900 = T₅₈₀₀).

The spelling of 67291625 in words is "sixty-seven million, two hundred ninety-one thousand, six hundred twenty-five".