67904225 has 24 divisors (see below), whose sum is σ = 87699000. Its totient is φ = 52093440.

The previous prime is 67904201. The next prime is 67904261. The reversal of 67904225 is 52240976.

It can be written as a sum of positive squares in 12 ways, for example, as 23104 + 67881121 = 152^2 + 8239^2 .

It is not a de Polignac number, because 67904225 - 2²⁴ = 51127009 is a prime.

It is a super-2 number, since 2×67904225² = 9221967545701250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 165821 + ... + 166229.

It is an arithmetic number, because the mean of its divisors is an integer number (3654125).

Almost surely, 2^67904225 is an apocalyptic number.

It is an amenable number.

67904225 is a deficient number, since it is larger than the sum of its proper divisors (19794775).

67904225 is a wasteful number, since it uses less digits than its factorization.

67904225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677 (or 672 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 67904225 is about 8240.4019926215. The cubic root of 67904225 is about 407.9737924503.

The spelling of 67904225 in words is "sixty-seven million, nine hundred four thousand, two hundred twenty-five".