162759799225 has 9 divisors (see below), whose sum is σ = 201824652367. Its totient is φ = 130206225640.

The previous prime is 162759799219. The next prime is 162759799231. The reversal of 162759799225 is 522997957261.

It is a happy number.

The square root of 162759799225 is 403435.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (162759799219) and next prime (162759799231).

It can be written as a sum of positive squares in only one way, i.e., 58593527721 + 104166271504 = 242061^2 + 322748^2 .

It is not a de Polignac number, because 162759799225 - 2²⁹ = 162222928313 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1976832 + ... + 2057518.

Almost surely, 2^162759799225 is an apocalyptic number.

162759799225 is the 403435-th square number.

162759799225 is the 201718-th centered octagonal number.

It is an amenable number.

162759799225 is a deficient number, since it is larger than the sum of its proper divisors (39064853142).

162759799225 is an frugal number, since it uses more digits than its factorization.

162759799225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161384 (or 80692 counting only the distinct ones).

The product of its digits is 42865200, while the sum is 64.

Multiplying 162759799225 by its sum of digits (64), we get a square (10416627150400 = 3227480²).

The spelling of 162759799225 in words is "one hundred sixty-two billion, seven hundred fifty-nine million, seven hundred ninety-nine thousand, two hundred twenty-five".