1555025000 has 48 divisors (see below), whose sum is σ = 3644415180. Its totient is φ = 622000000.

The previous prime is 1555024997. The next prime is 1555025023. The reversal of 1555025000 is 5205551.

It can be written as a sum of positive squares in 6 ways, for example, as 499164964 + 1055860036 = 22342^2 + 32494^2 .

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 11 ways as a sum of consecutive naturals, for example, 6101 + ... + 56100.

Almost surely, 2^1555025000 is an apocalyptic number.

1555025000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1555025000 is an abundant number, since it is smaller than the sum of its proper divisors (2089390180).

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

1555025000 is an frugal number, since it uses more digits than its factorization.

1555025000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62232 (or 62208 counting only the distinct ones).

The product of its (nonzero) digits is 1250, while the sum is 23.

The square root of 1555025000 is about 39433.8052944425. The cubic root of 1555025000 is about 1158.5438029413.

The spelling of 1555025000 in words is "one billion, five hundred fifty-five million, twenty-five thousand".