1557075625 has 40 divisors (see below), whose sum is σ = 2284018880. Its totient is φ = 1038744000.

The previous prime is 1557075581. The next prime is 1557075629. The reversal of 1557075625 is 5265707551.

It is a happy number.

It is not a de Polignac number, because 1557075625 - 2¹⁷ = 1556944553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1557075629) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 157066 + ... + 166684.

It is an arithmetic number, because the mean of its divisors is an integer number (57100472).

Almost surely, 2^1557075625 is an apocalyptic number.

It is an amenable number.

1557075625 is a deficient number, since it is larger than the sum of its proper divisors (726943255).

1557075625 is an frugal number, since it uses more digits than its factorization.

1557075625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9683 (or 9668 counting only the distinct ones).

The product of its (nonzero) digits is 367500, while the sum is 43.

The square root of 1557075625 is about 39459.7975793085. The cubic root of 1557075625 is about 1159.0528398481.

The spelling of 1557075625 in words is "one billion, five hundred fifty-seven million, seventy-five thousand, six hundred twenty-five".