204625154563242 has 256 divisors, whose sum is σ = 481030166937600. Its totient is φ = 56829583971072.

The previous prime is 204625154563153. The next prime is 204625154563273. The reversal of 204625154563242 is 242365451526402.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 45543099148 + ... + 45543103640.

It is an arithmetic number, because the mean of its divisors is an integer number (1879024089600).

Almost surely, 2^{204625154563242} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204625154563242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240515083468800).

204625154563242 is an abundant number, since it is smaller than the sum of its proper divisors (276405012374358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204625154563242 is a wasteful number, since it uses less digits than its factorization.

204625154563242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5425.

The product of its (nonzero) digits is 13824000, while the sum is 51.

The spelling of 204625154563242 in words is "two hundred four trillion, six hundred twenty-five billion, one hundred fifty-four million, five hundred sixty-three thousand, two hundred forty-two".