1225166425 has 24 divisors (see below), whose sum is σ = 1743745536. Its totient is φ = 836480640.

The previous prime is 1225166419. The next prime is 1225166429. The reversal of 1225166425 is 5246615221.

It is not a de Polignac number, because 1225166425 - 2⁷ = 1225166297 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1225166429) 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 23 ways as a sum of consecutive naturals, for example, 25752 + ... + 55798.

It is an arithmetic number, because the mean of its divisors is an integer number (72656064).

Almost surely, 2^1225166425 is an apocalyptic number.

It is an amenable number.

1225166425 is a deficient number, since it is larger than the sum of its proper divisors (518579111).

1225166425 is a wasteful number, since it uses less digits than its factorization.

1225166425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30297 (or 30292 counting only the distinct ones).

The product of its digits is 28800, while the sum is 34.

The square root of 1225166425 is about 35002.3774192554. The cubic root of 1225166425 is about 1070.0359335183.

The spelling of 1225166425 in words is "one billion, two hundred twenty-five million, one hundred sixty-six thousand, four hundred twenty-five".