255570421572 has 18 divisors (see below), whose sum is σ = 646025232398. Its totient is φ = 85190140512.

The previous prime is 255570421559. The next prime is 255570421607. The reversal of 255570421572 is 275124075552.

255570421572 is a `hidden beast` number, since 2 + 5 + 5 + 5 + 70 + 4 + 2 + 1 + 572 = 666.

It can be written as a sum of positive squares in only one way, i.e., 159435698436 + 96134723136 = 399294^2 + 310056^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3549589153 + ... + 3549589224.

Almost surely, 2^255570421572 is an apocalyptic number.

It is an amenable number.

255570421572 is an abundant number, since it is smaller than the sum of its proper divisors (390454810826).

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

255570421572 is a wasteful number, since it uses less digits than its factorization.

255570421572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7099178387 (or 7099178382 counting only the distinct ones).

The product of its (nonzero) digits is 980000, while the sum is 45.

The spelling of 255570421572 in words is "two hundred fifty-five billion, five hundred seventy million, four hundred twenty-one thousand, five hundred seventy-two".