1266225345 has 128 divisors (see below), whose sum is σ = 2875944960. Its totient is φ = 513216000.

The previous prime is 1266225299. The next prime is 1266225361. The reversal of 1266225345 is 5435226621.

1266225345 is a `hidden beast` number, since 1 + 26 + 622 + 5 + 3 + 4 + 5 = 666.

It is not a de Polignac number, because 1266225345 - 2⁹ = 1266224833 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 424710 + ... + 427680.

It is an arithmetic number, because the mean of its divisors is an integer number (22468320).

Almost surely, 2^1266225345 is an apocalyptic number.

1266225345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1266225345 is an abundant number, since it is smaller than the sum of its proper divisors (1609719615).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1266225345 is a wasteful number, since it uses less digits than its factorization.

1266225345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3044 (or 3038 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 1266225345 is about 35584.0602657988. The cubic root of 1266225345 is about 1081.8581822640.

The spelling of 1266225345 in words is "one billion, two hundred sixty-six million, two hundred twenty-five thousand, three hundred forty-five".