1245285200 has 30 divisors (see below), whose sum is σ = 2991798654. Its totient is φ = 498113920.

The previous prime is 1245285157. The next prime is 1245285247. The reversal of 1245285200 is 25825421.

It can be written as a sum of positive squares in 3 ways, for example, as 135862336 + 1109422864 = 11656^2 + 33308^2 .

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1556207 + ... + 1557006.

Almost surely, 2^1245285200 is an apocalyptic number.

1245285200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1245285200 is an abundant number, since it is smaller than the sum of its proper divisors (1746513454).

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

1245285200 is a wasteful number, since it uses less digits than its factorization.

1245285200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3113231 (or 3113220 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 1245285200 is about 35288.5987253674. The cubic root of 1245285200 is about 1075.8612748007.

The spelling of 1245285200 in words is "one billion, two hundred forty-five million, two hundred eighty-five thousand, two hundred".