442125251556 has 12 divisors (see below), whose sum is σ = 1031625586992. Its totient is φ = 147375083848.

The previous prime is 442125251543. The next prime is 442125251573. The reversal of 442125251556 is 655152521244.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×442125251556² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18421885470 + ... + 18421885493.

It is an arithmetic number, because the mean of its divisors is an integer number (85968798916).

Almost surely, 2^442125251556 is an apocalyptic number.

It is an amenable number.

442125251556 is an abundant number, since it is smaller than the sum of its proper divisors (589500335436).

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

442125251556 is a wasteful number, since it uses less digits than its factorization.

442125251556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36843770970 (or 36843770968 counting only the distinct ones).

The product of its digits is 480000, while the sum is 42.

The spelling of 442125251556 in words is "four hundred forty-two billion, one hundred twenty-five million, two hundred fifty-one thousand, five hundred fifty-six".