1265077716 has 96 divisors (see below), whose sum is σ = 3501324288. Its totient is φ = 348001920.

The previous prime is 1265077699. The next prime is 1265077733. The reversal of 1265077716 is 6177705621.

It is an interprime number because it is at equal distance from previous prime (1265077699) and next prime (1265077733).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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, 253986 + ... + 258918.

It is an arithmetic number, because the mean of its divisors is an integer number (36472128).

Almost surely, 2^1265077716 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1265077716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1750662144).

1265077716 is an abundant number, since it is smaller than the sum of its proper divisors (2236246572).

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

1265077716 is a wasteful number, since it uses less digits than its factorization.

1265077716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5061 (or 5059 counting only the distinct ones).

The product of its (nonzero) digits is 123480, while the sum is 42.

The square root of 1265077716 is about 35567.9310053312. The cubic root of 1265077716 is about 1081.5312401672.

The spelling of 1265077716 in words is "one billion, two hundred sixty-five million, seventy-seven thousand, seven hundred sixteen".