1250022440 has 16 divisors (see below), whose sum is σ = 2812550580. Its totient is φ = 500008960.

The previous prime is 1250022421. The next prime is 1250022479. The reversal of 1250022440 is 442200521.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1243126564 + 6895876 = 35258^2 + 2626^2 .

It is a super-2 number, since 2×1250022440² = 3125112201007107200, which contains 22 as substring.

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 15625241 + ... + 15625320.

Almost surely, 2^1250022440 is an apocalyptic number.

1250022440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1250022440 is an abundant number, since it is smaller than the sum of its proper divisors (1562528140).

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

1250022440 is a wasteful number, since it uses less digits than its factorization.

1250022440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31250572 (or 31250568 counting only the distinct ones).

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

The square root of 1250022440 is about 35355.6564074265. The cubic root of 1250022440 is about 1077.2237910460.

Adding to 1250022440 its reverse (442200521), we get a palindrome (1692222961).

The spelling of 1250022440 in words is "one billion, two hundred fifty million, twenty-two thousand, four hundred forty".