1225373189 has 2 divisors, whose sum is σ = 1225373190. Its totient is φ = 1225373188.

The previous prime is 1225373153. The next prime is 1225373207. The reversal of 1225373189 is 9813735221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1206520225 + 18852964 = 34735^2 + 4342^2 .

It is a cyclic number.

It is not a de Polignac number, because 1225373189 - 2¹⁶ = 1225307653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1225373119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612686594 + 612686595.

It is an arithmetic number, because the mean of its divisors is an integer number (612686595).

Almost surely, 2^1225373189 is an apocalyptic number.

It is an amenable number.

1225373189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225373189 is an equidigital number, since it uses as much as digits as its factorization.

1225373189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 41.

The square root of 1225373189 is about 35005.3308654553. The cubic root of 1225373189 is about 1070.0961246510.

The spelling of 1225373189 in words is "one billion, two hundred twenty-five million, three hundred seventy-three thousand, one hundred eighty-nine".