1220503250 has 64 divisors (see below), whose sum is σ = 2341243008. Its totient is φ = 476280000.

The previous prime is 1220503237. The next prime is 1220503259. The reversal of 1220503250 is 523050221.

It is a super-3 number, since 3×1220503250³ (a number of 28 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1220503259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2485505 + ... + 2485995.

It is an arithmetic number, because the mean of its divisors is an integer number (36581922).

Almost surely, 2^1220503250 is an apocalyptic number.

1220503250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220503250 is a deficient number, since it is larger than the sum of its proper divisors (1120739758).

1220503250 is a wasteful number, since it uses less digits than its factorization.

1220503250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732 (or 722 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 1220503250 is about 34935.7016531799. The cubic root of 1220503250 is about 1068.6766327895.

Adding to 1220503250 its reverse (523050221), we get a palindrome (1743553471).

The spelling of 1220503250 in words is "one billion, two hundred twenty million, five hundred three thousand, two hundred fifty".