1265247064 has 16 divisors (see below), whose sum is σ = 2375326800. Its totient is φ = 631826592.

The previous prime is 1265247047. The next prime is 1265247077. The reversal of 1265247064 is 4607425621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92844 + ... + 105595.

It is an arithmetic number, because the mean of its divisors is an integer number (148457925).

Almost surely, 2^1265247064 is an apocalyptic number.

It is an amenable number.

1265247064 is a deficient number, since it is larger than the sum of its proper divisors (1110079736).

1265247064 is a wasteful number, since it uses less digits than its factorization.

1265247064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199242 (or 199238 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 1265247064 is about 35570.3115533165. The cubic root of 1265247064 is about 1081.5794972764.

The spelling of 1265247064 in words is "one billion, two hundred sixty-five million, two hundred forty-seven thousand, sixty-four".