216273125 has 20 divisors (see below), whose sum is σ = 275396220. Its totient is φ = 169728000.

The previous prime is 216273091. The next prime is 216273131. The reversal of 216273125 is 521372612.

It is a happy number.

It can be written as a sum of positive squares in 10 ways, for example, as 187607809 + 28665316 = 13697^2 + 5354^2 .

It is not a de Polignac number, because 216273125 - 2⁶ = 216273061 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 29861 + ... + 36389.

It is an arithmetic number, because the mean of its divisors is an integer number (13769811).

Almost surely, 2^216273125 is an apocalyptic number.

216273125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

216273125 is a deficient number, since it is larger than the sum of its proper divisors (59123095).

216273125 is an frugal number, since it uses more digits than its factorization.

216273125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6602 (or 6587 counting only the distinct ones).

The product of its digits is 5040, while the sum is 29.

The square root of 216273125 is about 14706.2274224221. The cubic root of 216273125 is about 600.2527870014.

The spelling of 216273125 in words is "two hundred sixteen million, two hundred seventy-three thousand, one hundred twenty-five".