68225515 has 8 divisors (see below), whose sum is σ = 82001808. Its totient is φ = 54492960.

The previous prime is 68225467. The next prime is 68225537. The reversal of 68225515 is 51552286.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68225515 - 2⁷ = 68225387 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7396 + ... + 13825.

It is an arithmetic number, because the mean of its divisors is an integer number (10250226).

Almost surely, 2^68225515 is an apocalyptic number.

68225515 is a deficient number, since it is larger than the sum of its proper divisors (13776293).

68225515 is a wasteful number, since it uses less digits than its factorization.

68225515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21869.

The product of its digits is 24000, while the sum is 34.

The square root of 68225515 is about 8259.8737883820. The cubic root of 68225515 is about 408.6162252741.

The spelling of 68225515 in words is "sixty-eight million, two hundred twenty-five thousand, five hundred fifteen".