16325551265 has 32 divisors (see below), whose sum is σ = 21001661856. Its totient is φ = 12139724800.

The previous prime is 16325551261. The next prime is 16325551273. The reversal of 16325551265 is 56215552361.

It can be written as a sum of positive squares in 16 ways, for example, as 25411681 + 16300139584 = 5041^2 + 127672^2 .

It is not a de Polignac number, because 16325551265 - 2² = 16325551261 is a prime.

It is a super-2 number, since 2×16325551265² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16325551261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2811365 + ... + 2817165.

It is an arithmetic number, because the mean of its divisors is an integer number (656301933).

Almost surely, 2^16325551265 is an apocalyptic number.

It is an amenable number.

16325551265 is a deficient number, since it is larger than the sum of its proper divisors (4676110591).

16325551265 is a wasteful number, since it uses less digits than its factorization.

16325551265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6229.

The product of its digits is 270000, while the sum is 41.

The spelling of 16325551265 in words is "sixteen billion, three hundred twenty-five million, five hundred fifty-one thousand, two hundred sixty-five".