1555119225 has 81 divisors (see below), whose sum is σ = 3074492239. Its totient is φ = 750842400.

The previous prime is 1555119199. The next prime is 1555119281. The reversal of 1555119225 is 5229115551.

It is a happy number.

The square root of 1555119225 is 39435.

It is a perfect power (a square), and thus also a powerful number.

1555119225 is a `hidden beast` number, since 1 + 55 + 511 + 92 + 2 + 5 = 666.

It can be written as a sum of positive squares in only one way, i.e., 559842921 + 995276304 = 23661^2 + 31548^2 .

It is not a de Polignac number, because 1555119225 - 2⁵ = 1555119193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1555119225.

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 80 ways as a sum of consecutive naturals, for example, 6506656 + ... + 6506894.

Almost surely, 2^1555119225 is an apocalyptic number.

1555119225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1555119225 is the 39435-th square number.

1555119225 is the 19718-th centered octagonal number.

It is an amenable number.

1555119225 is a deficient number, since it is larger than the sum of its proper divisors (1519373014).

1555119225 is a wasteful number, since it uses less digits than its factorization.

1555119225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516 (or 258 counting only the distinct ones).

The product of its digits is 22500, while the sum is 36.

The cubic root of 1555119225 is about 1158.5672026905.

Multiplying 1555119225 by its sum of digits (36), we get a square (55984292100 = 236610²).

Multiplying 1555119225 by its product of digits (22500), we get a square (34990182562500 = 5915250²).

The spelling of 1555119225 in words is "one billion, five hundred fifty-five million, one hundred nineteen thousand, two hundred twenty-five".