1225295911 has 12 divisors (see below), whose sum is σ = 1426960800. Its totient is φ = 1049062560.

The previous prime is 1225295909. The next prime is 1225295917. The reversal of 1225295911 is 1195925221.

It is not a de Polignac number, because 1225295911 - 2¹ = 1225295909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225295917) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30915 + ... + 58363.

It is an arithmetic number, because the mean of its divisors is an integer number (118913400).

Almost surely, 2^1225295911 is an apocalyptic number.

1225295911 is a deficient number, since it is larger than the sum of its proper divisors (201664889).

1225295911 is an equidigital number, since it uses as much as digits as its factorization.

1225295911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28374 (or 28367 counting only the distinct ones).

The product of its digits is 16200, while the sum is 37.

The square root of 1225295911 is about 35004.2270447442. The cubic root of 1225295911 is about 1070.0736290207.

The spelling of 1225295911 in words is "one billion, two hundred twenty-five million, two hundred ninety-five thousand, nine hundred eleven".