165225515622 has 32 divisors (see below), whose sum is σ = 333352800000. Its totient is φ = 54593064288.

The previous prime is 165225515591. The next prime is 165225515639. The reversal of 165225515622 is 226515522561.

It is a happy number.

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, 245629 + ... + 625127.

It is an arithmetic number, because the mean of its divisors is an integer number (10417275000).

Almost surely, 2^165225515622 is an apocalyptic number.

165225515622 is an abundant number, since it is smaller than the sum of its proper divisors (168127284378).

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

165225515622 is a wasteful number, since it uses less digits than its factorization.

165225515622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380140.

The product of its digits is 360000, while the sum is 42.

The spelling of 165225515622 in words is "one hundred sixty-five billion, two hundred twenty-five million, five hundred fifteen thousand, six hundred twenty-two".