216625300 has 36 divisors (see below), whose sum is σ = 471961980. Its totient is φ = 86302720.

The previous prime is 216625261. The next prime is 216625313. The reversal of 216625300 is 3526612.

It can be written as a sum of positive squares in 6 ways, for example, as 5776 + 216619524 = 76^2 + 14718^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21486 + ... + 29914.

It is an arithmetic number, because the mean of its divisors is an integer number (13110055).

Almost surely, 2^216625300 is an apocalyptic number.

216625300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216625300 is an abundant number, since it is smaller than the sum of its proper divisors (255336680).

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

216625300 is a wasteful number, since it uses less digits than its factorization.

216625300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8700 (or 8693 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 216625300 is about 14718.1962210048. The cubic root of 216625300 is about 600.5784236790.

It can be divided in two parts, 21662 and 5300, that added together give a palindrome (26962).

The spelling of 216625300 in words is "two hundred sixteen million, six hundred twenty-five thousand, three hundred".