1225939589 has 16 divisors (see below), whose sum is σ = 1453322112. Its totient is φ = 1012290048.

The previous prime is 1225939579. The next prime is 1225939597. The reversal of 1225939589 is 9859395221.

It is not a de Polignac number, because 1225939589 - 2²⁸ = 957504133 is a prime.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1225939589.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225939529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5924 + ... + 49869.

It is an arithmetic number, because the mean of its divisors is an integer number (90832632).

Almost surely, 2^1225939589 is an apocalyptic number.

It is an amenable number.

1225939589 is a deficient number, since it is larger than the sum of its proper divisors (227382523).

1225939589 is an equidigital number, since it uses as much as digits as its factorization.

1225939589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55916.

The product of its digits is 1749600, while the sum is 53.

The square root of 1225939589 is about 35013.4201271455. The cubic root of 1225939589 is about 1070.2609748613.

The spelling of 1225939589 in words is "one billion, two hundred twenty-five million, nine hundred thirty-nine thousand, five hundred eighty-nine".