1225055099 has 2 divisors, whose sum is σ = 1225055100. Its totient is φ = 1225055098.

The previous prime is 1225055063. The next prime is 1225055101. The reversal of 1225055099 is 9905505221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1225055099 - 2²⁰ = 1224006523 is a prime.

Together with 1225055101, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1225055399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612527549 + 612527550.

It is an arithmetic number, because the mean of its divisors is an integer number (612527550).

Almost surely, 2^1225055099 is an apocalyptic number.

1225055099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225055099 is an equidigital number, since it uses as much as digits as its factorization.

1225055099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40500, while the sum is 38.

The square root of 1225055099 is about 35000.7871197206. The cubic root of 1225055099 is about 1070.0035225668.

The spelling of 1225055099 in words is "one billion, two hundred twenty-five million, fifty-five thousand, ninety-nine".