68611225 has 6 divisors (see below), whose sum is σ = 85077950. Its totient is φ = 54888960.

The previous prime is 68611217. The next prime is 68611247. The reversal of 68611225 is 52211686.

It can be written as a sum of positive squares in 3 ways, for example, as 3136 + 68608089 = 56^2 + 8283^2 .

It is not a de Polignac number, because 68611225 - 2³ = 68611217 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1372200 + ... + 1372249.

Almost surely, 2^68611225 is an apocalyptic number.

It is an amenable number.

68611225 is a deficient number, since it is larger than the sum of its proper divisors (16466725).

68611225 is a wasteful number, since it uses less digits than its factorization.

68611225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2744459 (or 2744454 counting only the distinct ones).

The product of its digits is 5760, while the sum is 31.

The square root of 68611225 is about 8283.1893012293. The cubic root of 68611225 is about 409.3848100907.

It can be divided in two parts, 686 and 11225, that added together give a palindrome (11911).

The spelling of 68611225 in words is "sixty-eight million, six hundred eleven thousand, two hundred twenty-five".