1266254497 has 8 divisors (see below), whose sum is σ = 1296535680. Its totient is φ = 1236011280.

The previous prime is 1266254491. The next prime is 1266254513. The reversal of 1266254497 is 7944526621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1266254497 - 2⁷ = 1266254369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1266254491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64872 + ... + 82102.

It is an arithmetic number, because the mean of its divisors is an integer number (162066960).

Almost surely, 2^1266254497 is an apocalyptic number.

It is an amenable number.

1266254497 is a deficient number, since it is larger than the sum of its proper divisors (30281183).

1266254497 is a wasteful number, since it uses less digits than its factorization.

1266254497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18983.

The product of its digits is 725760, while the sum is 46.

The square root of 1266254497 is about 35584.4698850496. The cubic root of 1266254497 is about 1081.8664846534.

The spelling of 1266254497 in words is "one billion, two hundred sixty-six million, two hundred fifty-four thousand, four hundred ninety-seven".