1250224220 has 72 divisors (see below), whose sum is σ = 3159505440. Its totient is φ = 413857920.

The previous prime is 1250224211. The next prime is 1250224229. The reversal of 1250224220 is 224220521.

It is an interprime number because it is at equal distance from previous prime (1250224211) and next prime (1250224229).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1250224192 and 1250224201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1250224229) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 6425 + ... + 50415.

It is an arithmetic number, because the mean of its divisors is an integer number (43882020).

Almost surely, 2^1250224220 is an apocalyptic number.

1250224220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1250224220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1579752720).

1250224220 is an abundant number, since it is smaller than the sum of its proper divisors (1909281220).

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

1250224220 is a wasteful number, since it uses less digits than its factorization.

1250224220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44043 (or 44034 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 1250224220 is about 35358.5098667916. The cubic root of 1250224220 is about 1077.2817501447.

Adding to 1250224220 its reverse (224220521), we get a palindrome (1474444741).

The spelling of 1250224220 in words is "one billion, two hundred fifty million, two hundred twenty-four thousand, two hundred twenty".