1555025056 has 48 divisors (see below), whose sum is σ = 3470493600. Its totient is φ = 679926528.

The previous prime is 1555025047. The next prime is 1555025077. The reversal of 1555025056 is 6505205551.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90466 + ... + 106273.

It is an arithmetic number, because the mean of its divisors is an integer number (72301950).

Almost surely, 2^1555025056 is an apocalyptic number.

1555025056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1555025056 is an abundant number, since it is smaller than the sum of its proper divisors (1915468544).

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

1555025056 is a wasteful number, since it uses less digits than its factorization.

1555025056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196781 (or 196773 counting only the distinct ones).

The product of its (nonzero) digits is 37500, while the sum is 34.

The square root of 1555025056 is about 39433.8060044931. The cubic root of 1555025056 is about 1158.5438168486.

The spelling of 1555025056 in words is "one billion, five hundred fifty-five million, twenty-five thousand, fifty-six".