1550261225 has 12 divisors (see below), whose sum is σ = 1923406284. Its totient is φ = 1239510720.

The previous prime is 1550261213. The next prime is 1550261231. The reversal of 1550261225 is 5221620551.

It can be written as a sum of positive squares in 6 ways, for example, as 295118041 + 1255143184 = 17179^2 + 35428^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1550261225 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30407 + ... + 63443.

It is an arithmetic number, because the mean of its divisors is an integer number (160283857).

Almost surely, 2^1550261225 is an apocalyptic number.

It is an amenable number.

1550261225 is a deficient number, since it is larger than the sum of its proper divisors (373145059).

1550261225 is a wasteful number, since it uses less digits than its factorization.

1550261225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34924 (or 34919 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 1550261225 is about 39373.3567911094. The cubic root of 1550261225 is about 1157.3595374309.

Adding to 1550261225 its reverse (5221620551), we get a palindrome (6771881776).

The spelling of 1550261225 in words is "one billion, five hundred fifty million, two hundred sixty-one thousand, two hundred twenty-five".