161325255 has 64 divisors (see below), whose sum is σ = 322237440. Its totient is φ = 67101696.

The previous prime is 161325253. The next prime is 161325299. The reversal of 161325255 is 552523161.

It is a happy number.

161325255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161325255 - 2¹ = 161325253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161325253) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 98836 + ... + 100454.

It is an arithmetic number, because the mean of its divisors is an integer number (5034960).

Almost surely, 2^161325255 is an apocalyptic number.

161325255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161325255 is a deficient number, since it is larger than the sum of its proper divisors (160912185).

161325255 is a wasteful number, since it uses less digits than its factorization.

161325255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720.

The product of its digits is 9000, while the sum is 30.

The square root of 161325255 is about 12701.3879162869. The cubic root of 161325255 is about 544.3782770793.

The spelling of 161325255 in words is "one hundred sixty-one million, three hundred twenty-five thousand, two hundred fifty-five".