216034225 has 12 divisors (see below), whose sum is σ = 292235760. Its totient is φ = 157115600.

The previous prime is 216034211. The next prime is 216034243. The reversal of 216034225 is 522430612.

216034225 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 216034225 - 2⁷ = 216034097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 216034225.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 392515 + ... + 393064.

It is an arithmetic number, because the mean of its divisors is an integer number (24352980).

Almost surely, 2^216034225 is an apocalyptic number.

216034225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

216034225 is a deficient number, since it is larger than the sum of its proper divisors (76201535).

216034225 is a wasteful number, since it uses less digits than its factorization.

216034225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785600 (or 785595 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 216034225 is about 14698.1027687249. The cubic root of 216034225 is about 600.0316881412.

Adding to 216034225 its reverse (522430612), we get a palindrome (738464837).

The spelling of 216034225 in words is "two hundred sixteen million, thirty-four thousand, two hundred twenty-five".