1557225200 has 30 divisors (see below), whose sum is σ = 3741234504. Its totient is φ = 622889920.

The previous prime is 1557225191. The next prime is 1557225217. The reversal of 1557225200 is 25227551.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1946132 + ... + 1946931.

Almost surely, 2^1557225200 is an apocalyptic number.

1557225200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1557225200 is an abundant number, since it is smaller than the sum of its proper divisors (2184009304).

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

1557225200 is a wasteful number, since it uses less digits than its factorization.

1557225200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3893081 (or 3893070 counting only the distinct ones).

The product of its (nonzero) digits is 7000, while the sum is 29.

The square root of 1557225200 is about 39461.6928172120. The cubic root of 1557225200 is about 1159.0899521062.

The spelling of 1557225200 in words is "one billion, five hundred fifty-seven million, two hundred twenty-five thousand, two hundred".