265229120016 has 135 divisors (see below), whose sum is σ = 863601475503. Its totient is φ = 75767388480.

The previous prime is 265229119999. The next prime is 265229120017. The reversal of 265229120016 is 610021922562.

The square root of 265229120016 is 515004.

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

265229120016 is a `hidden beast` number, since 2 + 6 + 522 + 9 + 120 + 0 + 1 + 6 = 666.

It is a super-2 number, since 2×265229120016² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (265229120017) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 43257271 + ... + 43263401.

Almost surely, 2^265229120016 is an apocalyptic number.

265229120016 is the 515004-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 265229120016

265229120016 is an abundant number, since it is smaller than the sum of its proper divisors (598372355487).

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

265229120016 is an frugal number, since it uses more digits than its factorization.

265229120016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12290 (or 6143 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

Multiplying 265229120016 by its sum of digits (36), we get a square (9548248320576 = 3090024²).

265229120016 divided by its sum of digits (36) gives a square (7367475556 = 85834²).

The spelling of 265229120016 in words is "two hundred sixty-five billion, two hundred twenty-nine million, one hundred twenty thousand, sixteen".