1266225323 has 4 divisors (see below), whose sum is σ = 1381336728. Its totient is φ = 1151113920.

The previous prime is 1266225299. The next prime is 1266225361. The reversal of 1266225323 is 3235226621.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1266225323 - 2²⁰ = 1265176747 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1266225323.

It is not an unprimeable number, because it can be changed into a prime (1266225383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57555686 + ... + 57555707.

It is an arithmetic number, because the mean of its divisors is an integer number (345334182).

Almost surely, 2^1266225323 is an apocalyptic number.

1266225323 is a deficient number, since it is larger than the sum of its proper divisors (115111405).

1266225323 is a wasteful number, since it uses less digits than its factorization.

1266225323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115111404.

The product of its digits is 25920, while the sum is 32.

The square root of 1266225323 is about 35584.0599566716. The cubic root of 1266225323 is about 1081.8581759984.

It can be divided in two parts, 12662 and 25323, that multiplied together give a triangular number (320639826 = T₂₅₃₂₃).

The spelling of 1266225323 in words is "one billion, two hundred sixty-six million, two hundred twenty-five thousand, three hundred twenty-three".