215025250 has 32 divisors (see below), whose sum is σ = 439126272. Its totient is φ = 78190000.

The previous prime is 215025233. The next prime is 215025253. The reversal of 215025250 is 52520512.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (215025253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36346 + ... + 41845.

It is an arithmetic number, because the mean of its divisors is an integer number (13722696).

Almost surely, 2^215025250 is an apocalyptic number.

215025250 is an abundant number, since it is smaller than the sum of its proper divisors (224101022).

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

215025250 is a wasteful number, since it uses less digits than its factorization.

215025250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78219 (or 78209 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 215025250 is about 14663.7392911904. The cubic root of 215025250 is about 599.0960926400.

Adding to 215025250 its reverse (52520512), we get a palindrome (267545762).

The spelling of 215025250 in words is "two hundred fifteen million, twenty-five thousand, two hundred fifty".