67225921 has 4 divisors (see below), whose sum is σ = 76829632. Its totient is φ = 57622212.

The previous prime is 67225877. The next prime is 67225931. The reversal of 67225921 is 12952276.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67225921 - 2⁷ = 67225793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67225931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4801845 + ... + 4801858.

It is an arithmetic number, because the mean of its divisors is an integer number (19207408).

Almost surely, 2^67225921 is an apocalyptic number.

It is an amenable number.

67225921 is a deficient number, since it is larger than the sum of its proper divisors (9603711).

67225921 is an equidigital number, since it uses as much as digits as its factorization.

67225921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9603710.

The product of its digits is 15120, while the sum is 34.

The square root of 67225921 is about 8199.1414794477. The cubic root of 67225921 is about 406.6108098355.

The spelling of 67225921 in words is "sixty-seven million, two hundred twenty-five thousand, nine hundred twenty-one".