1555747125 has 16 divisors (see below), whose sum is σ = 2588763840. Its totient is φ = 829731600.

The previous prime is 1555747097. The next prime is 1555747139. The reversal of 1555747125 is 5217475551.

1555747125 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1555747125 - 2⁹ = 1555746613 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 2073955 + ... + 2074704.

It is an arithmetic number, because the mean of its divisors is an integer number (161797740).

Almost surely, 2^1555747125 is an apocalyptic number.

1555747125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1555747125 is a deficient number, since it is larger than the sum of its proper divisors (1033016715).

1555747125 is an equidigital number, since it uses as much as digits as its factorization.

1555747125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4148677 (or 4148667 counting only the distinct ones).

The product of its digits is 245000, while the sum is 42.

The square root of 1555747125 is about 39442.9603985299. The cubic root of 1555747125 is about 1158.7231106640.

The spelling of 1555747125 in words is "one billion, five hundred fifty-five million, seven hundred forty-seven thousand, one hundred twenty-five".