68866210825 has 12 divisors (see below), whose sum is σ = 88338726540. Its totient is φ = 53193210560.

The previous prime is 68866210813. The next prime is 68866210879. The reversal of 68866210825 is 52801266886.

It can be written as a sum of positive squares in 6 ways, for example, as 7201898496 + 61664312329 = 84864^2 + 248323^2 .

It is not a de Polignac number, because 68866210825 - 2⁵ = 68866210793 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47493214 + ... + 47494663.

It is an arithmetic number, because the mean of its divisors is an integer number (7361560545).

Almost surely, 2^68866210825 is an apocalyptic number.

It is an amenable number.

68866210825 is a deficient number, since it is larger than the sum of its proper divisors (19472515715).

68866210825 is a wasteful number, since it uses less digits than its factorization.

68866210825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94987916 (or 94987911 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 52.

The spelling of 68866210825 in words is "sixty-eight billion, eight hundred sixty-six million, two hundred ten thousand, eight hundred twenty-five".