1255552225 has 24 divisors (see below), whose sum is σ = 1605756600. Its totient is φ = 973248000.

The previous prime is 1255552223. The next prime is 1255552229. The reversal of 1255552225 is 5222555521.

It can be written as a sum of positive squares in 12 ways, for example, as 600397009 + 655155216 = 24503^2 + 25596^2 .

It is not a de Polignac number, because 1255552225 - 2¹ = 1255552223 is a prime.

It is a super-2 number, since 2×1255552225² = 3152822779404901250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1255552223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148615 + ... + 156835.

It is an arithmetic number, because the mean of its divisors is an integer number (66906525).

Almost surely, 2^1255552225 is an apocalyptic number.

It is an amenable number.

1255552225 is a deficient number, since it is larger than the sum of its proper divisors (350204375).

1255552225 is a wasteful number, since it uses less digits than its factorization.

1255552225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8421 (or 8416 counting only the distinct ones).

The product of its digits is 50000, while the sum is 34.

The square root of 1255552225 is about 35433.7723789043. The cubic root of 1255552225 is about 1078.8099102164.

The spelling of 1255552225 in words is "one billion, two hundred fifty-five million, five hundred fifty-two thousand, two hundred twenty-five".