165225515504 has 60 divisors (see below), whose sum is σ = 372475528344. Its totient is φ = 70794605952.

The previous prime is 165225515491. The next prime is 165225515561. The reversal of 165225515504 is 405515522561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3751499 + ... + 3795285.

Almost surely, 2^165225515504 is an apocalyptic number.

165225515504 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

165225515504 is an abundant number, since it is smaller than the sum of its proper divisors (207250012840).

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

165225515504 is a wasteful number, since it uses less digits than its factorization.

165225515504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48622 (or 48609 counting only the distinct ones).

The product of its (nonzero) digits is 300000, while the sum is 41.

The spelling of 165225515504 in words is "one hundred sixty-five billion, two hundred twenty-five million, five hundred fifteen thousand, five hundred four".