1056556225 has 12 divisors (see below), whose sum is σ = 1340599216. Its totient is φ = 825587280.

The previous prime is 1056556223. The next prime is 1056556231. The reversal of 1056556225 is 5226556501.

It is not a de Polignac number, because 1056556225 - 2¹ = 1056556223 is a prime.

It is a super-2 number, since 2×1056556225² = 2232622113172501250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1056556223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 490347 + ... + 492496.

Almost surely, 2^1056556225 is an apocalyptic number.

It is an amenable number.

1056556225 is a deficient number, since it is larger than the sum of its proper divisors (284042991).

1056556225 is an equidigital number, since it uses as much as digits as its factorization.

1056556225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982896 (or 982891 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 37.

The square root of 1056556225 is about 32504.7108124346. The cubic root of 1056556225 is about 1018.5074366989.

The spelling of 1056556225 in words is "one billion, fifty-six million, five hundred fifty-six thousand, two hundred twenty-five".