1225554025 has 6 divisors (see below), whose sum is σ = 1519687022. Its totient is φ = 980443200.

The previous prime is 1225554023. The next prime is 1225554041. The reversal of 1225554025 is 5204555221.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 7823209 + 1217730816 = 2797^2 + 34896^2 .

It is not a de Polignac number, because 1225554025 - 2¹ = 1225554023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1225554023) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 24511056 + ... + 24511105.

Almost surely, 2^1225554025 is an apocalyptic number.

It is an amenable number.

1225554025 is a deficient number, since it is larger than the sum of its proper divisors (294132997).

1225554025 is an equidigital number, since it uses as much as digits as its factorization.

1225554025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49022171 (or 49022166 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 31.

The square root of 1225554025 is about 35007.9137481799. The cubic root of 1225554025 is about 1070.1487623253.

The spelling of 1225554025 in words is "one billion, two hundred twenty-five million, five hundred fifty-four thousand, twenty-five".