67915225 has 18 divisors (see below), whose sum is σ = 97966014. Its totient is φ = 46569600.

The previous prime is 67915223. The next prime is 67915231. The reversal of 67915225 is 52251976.

It can be written as a sum of positive squares in 3 ways, for example, as 3337929 + 64577296 = 1827^2 + 8036^2 .

It is not a de Polignac number, because 67915225 - 2¹ = 67915223 is a prime.

It is a super-2 number, since 2×67915225² = 9224955573601250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67915223) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 26496 + ... + 28945.

Almost surely, 2^67915225 is an apocalyptic number.

It is an amenable number.

67915225 is a deficient number, since it is larger than the sum of its proper divisors (30050789).

67915225 is a wasteful number, since it uses less digits than its factorization.

67915225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55465 (or 55453 counting only the distinct ones).

The product of its digits is 37800, while the sum is 37.

The square root of 67915225 is about 8241.0694087600. The cubic root of 67915225 is about 407.9958208754.

The spelling of 67915225 in words is "sixty-seven million, nine hundred fifteen thousand, two hundred twenty-five".