642223206125 has 32 divisors (see below), whose sum is σ = 843832080000. Its totient is φ = 486648979200.

The previous prime is 642223206103. The next prime is 642223206151. The reversal of 642223206125 is 521602322246.

It is a de Polignac number, because none of the positive numbers 2^k-642223206125 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14938661 + ... + 14981589.

It is an arithmetic number, because the mean of its divisors is an integer number (26369752500).

Almost surely, 2^642223206125 is an apocalyptic number.

It is an amenable number.

642223206125 is a deficient number, since it is larger than the sum of its proper divisors (201608873875).

642223206125 is a wasteful number, since it uses less digits than its factorization.

642223206125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49262 (or 49252 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

The spelling of 642223206125 in words is "six hundred forty-two billion, two hundred twenty-three million, two hundred six thousand, one hundred twenty-five".