642354225245 has 16 divisors (see below), whose sum is σ = 779805895680. Its totient is φ = 507900902784.

The previous prime is 642354225221. The next prime is 642354225251. The reversal of 642354225245 is 542522453246.

642354225245 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 642354225245 - 2⁶ = 642354225181 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 642354225196 and 642354225205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 793964 + ... + 1383866.

It is an arithmetic number, because the mean of its divisors is an integer number (48737868480).

Almost surely, 2^642354225245 is an apocalyptic number.

It is an amenable number.

642354225245 is a deficient number, since it is larger than the sum of its proper divisors (137451670435).

642354225245 is a wasteful number, since it uses less digits than its factorization.

642354225245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592444.

The product of its digits is 2304000, while the sum is 44.

The spelling of 642354225245 in words is "six hundred forty-two billion, three hundred fifty-four million, two hundred twenty-five thousand, two hundred forty-five".