1247352225 has 96 divisors (see below), whose sum is σ = 2435844096. Its totient is φ = 551385600.

The previous prime is 1247352187. The next prime is 1247352259. The reversal of 1247352225 is 5222537421.

It is not a de Polignac number, because 1247352225 - 2⁷ = 1247352097 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3594502 + ... + 3594848.

It is an arithmetic number, because the mean of its divisors is an integer number (25373376).

Almost surely, 2^1247352225 is an apocalyptic number.

1247352225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1247352225 is a deficient number, since it is larger than the sum of its proper divisors (1188491871).

1247352225 is a wasteful number, since it uses less digits than its factorization.

1247352225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575 (or 570 counting only the distinct ones).

The product of its digits is 33600, while the sum is 33.

The square root of 1247352225 is about 35317.8740158577. The cubic root of 1247352225 is about 1076.4562129061.

Adding to 1247352225 its reverse (5222537421), we get a palindrome (6469889646).

The spelling of 1247352225 in words is "one billion, two hundred forty-seven million, three hundred fifty-two thousand, two hundred twenty-five".