1266325444 has 96 divisors (see below), whose sum is σ = 2555642880. Its totient is φ = 545605632.

The previous prime is 1266325381. The next prime is 1266325453. The reversal of 1266325444 is 4445236621.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4571434 + ... + 4571710.

It is an arithmetic number, because the mean of its divisors is an integer number (26621280).

Almost surely, 2^1266325444 is an apocalyptic number.

It is an amenable number.

1266325444 is an abundant number, since it is smaller than the sum of its proper divisors (1289317436).

1266325444 is a wasteful number, since it uses less digits than its factorization.

1266325444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437 (or 435 counting only the distinct ones).

The product of its digits is 138240, while the sum is 37.

The square root of 1266325444 is about 35585.4667525944. The cubic root of 1266325444 is about 1081.8866895828.

The spelling of 1266325444 in words is "one billion, two hundred sixty-six million, three hundred twenty-five thousand, four hundred forty-four".