1265360216 has 16 divisors (see below), whose sum is σ = 2379020640. Its totient is φ = 630954720.

The previous prime is 1265360209. The next prime is 1265360231. The reversal of 1265360216 is 6120635621.

It is a super-2 number, since 2×1265360216² = 3202272952471133312, which contains 22 as substring.

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, 212555 + ... + 218426.

It is an arithmetic number, because the mean of its divisors is an integer number (148688790).

Almost surely, 2^1265360216 is an apocalyptic number.

It is an amenable number.

1265360216 is a deficient number, since it is larger than the sum of its proper divisors (1113660424).

1265360216 is a wasteful number, since it uses less digits than its factorization.

1265360216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431354 (or 431350 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 1265360216 is about 35571.9020576634. The cubic root of 1265360216 is about 1081.6117384723.

Adding to 1265360216 its reverse (6120635621), we get a palindrome (7385995837).

The spelling of 1265360216 in words is "one billion, two hundred sixty-five million, three hundred sixty thousand, two hundred sixteen".