1225558089 has 24 divisors (see below), whose sum is σ = 2057440320. Its totient is φ = 688447008.

The previous prime is 1225558031. The next prime is 1225558097. The reversal of 1225558089 is 9808555221.

It is a happy number.

1225558089 is a `hidden beast` number, since 12 + 2 + 5 + 558 + 0 + 89 = 666.

It is not a de Polignac number, because 1225558089 - 2¹⁷ = 1225427017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1225558489) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 161142 + ... + 168575.

It is an arithmetic number, because the mean of its divisors is an integer number (85726680).

Almost surely, 2^1225558089 is an apocalyptic number.

It is an amenable number.

1225558089 is a deficient number, since it is larger than the sum of its proper divisors (831882231).

1225558089 is a wasteful number, since it uses less digits than its factorization.

1225558089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329789 (or 329786 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 45.

The square root of 1225558089 is about 35007.9717921504. The cubic root of 1225558089 is about 1070.1499452134.

The spelling of 1225558089 in words is "one billion, two hundred twenty-five million, five hundred fifty-eight thousand, eighty-nine".