1252224100 has 18 divisors (see below), whose sum is σ = 2717326514. Its totient is φ = 500889600.

The previous prime is 1252224067. The next prime is 1252224107. The reversal of 1252224100 is 14222521.

It can be written as a sum of positive squares in 3 ways, for example, as 107619876 + 1144604224 = 10374^2 + 33832^2 .

It is not an unprimeable number, because it can be changed into a prime (1252224107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6261021 + ... + 6261220.

Almost surely, 2^1252224100 is an apocalyptic number.

1252224100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1252224100 is an abundant number, since it is smaller than the sum of its proper divisors (1465102414).

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

1252224100 is a wasteful number, since it uses less digits than its factorization.

1252224100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12522255 (or 12522248 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 1252224100 is about 35386.7786044449. The cubic root of 1252224100 is about 1077.8558568943.

Adding to 1252224100 its reverse (14222521), we get a palindrome (1266446621).

The spelling of 1252224100 in words is "one billion, two hundred fifty-two million, two hundred twenty-four thousand, one hundred".