1252972900 has 18 divisors (see below), whose sum is σ = 2718951410. Its totient is φ = 501189120.

The previous prime is 1252972867. The next prime is 1252972901. The reversal of 1252972900 is 92792521.

It can be written as a sum of positive squares in 3 ways, for example, as 352012644 + 900960256 = 18762^2 + 30016^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1252972900.

It is not an unprimeable number, because it can be changed into a prime (1252972901) 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, 6264765 + ... + 6264964.

Almost surely, 2^1252972900 is an apocalyptic number.

1252972900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1252972900 is an abundant number, since it is smaller than the sum of its proper divisors (1465978510).

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

1252972900 is a wasteful number, since it uses less digits than its factorization.

1252972900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12529743 (or 12529736 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 1252972900 is about 35397.3572459866. The cubic root of 1252972900 is about 1078.0706580745.

The spelling of 1252972900 in words is "one billion, two hundred fifty-two million, nine hundred seventy-two thousand, nine hundred".