1225672589 has 2 divisors, whose sum is σ = 1225672590. Its totient is φ = 1225672588.

The previous prime is 1225672517. The next prime is 1225672601. The reversal of 1225672589 is 9852765221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 996664900 + 229007689 = 31570^2 + 15133^2 .

It is a cyclic number.

It is not a de Polignac number, because 1225672589 - 2⁸ = 1225672333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1225672289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612836294 + 612836295.

It is an arithmetic number, because the mean of its divisors is an integer number (612836295).

Almost surely, 2^1225672589 is an apocalyptic number.

It is an amenable number.

1225672589 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225672589 is an equidigital number, since it uses as much as digits as its factorization.

1225672589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 604800, while the sum is 47.

The square root of 1225672589 is about 35009.6070957673. The cubic root of 1225672589 is about 1070.1832710791.

The spelling of 1225672589 in words is "one billion, two hundred twenty-five million, six hundred seventy-two thousand, five hundred eighty-nine".