1555234225 has 12 divisors (see below), whose sum is σ = 1936774476. Its totient is φ = 1238842880.

The previous prime is 1555234207. The next prime is 1555234237. The reversal of 1555234225 is 5224325551.

It can be written as a sum of positive squares in 6 ways, for example, as 156175009 + 1399059216 = 12497^2 + 37404^2 .

It is not a de Polignac number, because 1555234225 - 2⁷ = 1555234097 is a prime.

It is a super-2 number, since 2×1555234225² = 4837506989222701250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 127672 + ... + 139321.

It is an arithmetic number, because the mean of its divisors is an integer number (161397873).

Almost surely, 2^1555234225 is an apocalyptic number.

It is an amenable number.

1555234225 is a deficient number, since it is larger than the sum of its proper divisors (381540251).

1555234225 is a wasteful number, since it uses less digits than its factorization.

1555234225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267236 (or 267231 counting only the distinct ones).

The product of its digits is 60000, while the sum is 34.

The square root of 1555234225 is about 39436.4580686451. The cubic root of 1555234225 is about 1158.5957604032.

Adding to 1555234225 its reverse (5224325551), we get a palindrome (6779559776).

The spelling of 1555234225 in words is "one billion, five hundred fifty-five million, two hundred thirty-four thousand, two hundred twenty-five".