68990225 has 12 divisors (see below), whose sum is σ = 89268096. Its totient is φ = 52792080.

The previous prime is 68990191. The next prime is 68990227. The reversal of 68990225 is 52209986.

It is not a de Polignac number, because 68990225 - 2¹⁸ = 68728081 is a prime.

It is a super-2 number, since 2×68990225² = 9519302291101250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68990227) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 59417 + ... + 60566.

It is an arithmetic number, because the mean of its divisors is an integer number (7439008).

Almost surely, 2^68990225 is an apocalyptic number.

It is an amenable number.

68990225 is a deficient number, since it is larger than the sum of its proper divisors (20277871).

68990225 is a wasteful number, since it uses less digits than its factorization.

68990225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120016 (or 120011 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 68990225 is about 8306.0354562210. The cubic root of 68990225 is about 410.1372235498.

The spelling of 68990225 in words is "sixty-eight million, nine hundred ninety thousand, two hundred twenty-five".