1505222225 has 12 divisors (see below), whose sum is σ = 2010051036. Its totient is φ = 1111548480.

The previous prime is 1505222203. The next prime is 1505222227. The reversal of 1505222225 is 5222225051.

It can be written as a sum of positive squares in 6 ways, for example, as 284698129 + 1220524096 = 16873^2 + 34936^2 .

It is not a de Polignac number, because 1505222225 - 2⁸ = 1505221969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1505222194 and 1505222203.

It is not an unprimeable number, because it can be changed into a prime (1505222227) by changing a digit.

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, 2315402 + ... + 2316051.

It is an arithmetic number, because the mean of its divisors is an integer number (167504253).

Almost surely, 2^1505222225 is an apocalyptic number.

It is an amenable number.

1505222225 is a deficient number, since it is larger than the sum of its proper divisors (504828811).

1505222225 is a wasteful number, since it uses less digits than its factorization.

1505222225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4631476 (or 4631471 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 1505222225 is about 38797.1935196349. The cubic root of 1505222225 is about 1146.0411384063.

Adding to 1505222225 its reverse (5222225051), we get a palindrome (6727447276).

The spelling of 1505222225 in words is "one billion, five hundred five million, two hundred twenty-two thousand, two hundred twenty-five".