1225435219 has 2 divisors, whose sum is σ = 1225435220. Its totient is φ = 1225435218.

The previous prime is 1225435139. The next prime is 1225435231. The reversal of 1225435219 is 9125345221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1225435219 is a prime.

It is a super-2 number, since 2×1225435219² = 3003382951931155922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1225405219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612717609 + 612717610.

It is an arithmetic number, because the mean of its divisors is an integer number (612717610).

Almost surely, 2^1225435219 is an apocalyptic number.

1225435219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225435219 is an equidigital number, since it uses as much as digits as its factorization.

1225435219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 34.

The square root of 1225435219 is about 35006.2168621518. The cubic root of 1225435219 is about 1070.1141809034.

The spelling of 1225435219 in words is "one billion, two hundred twenty-five million, four hundred thirty-five thousand, two hundred nineteen".