1265470216 has 16 divisors (see below), whose sum is σ = 2454576300. Its totient is φ = 610916544.

The previous prime is 1265470183. The next prime is 1265470229. The reversal of 1265470216 is 6120745621.

It can be written as a sum of positive squares in 2 ways, for example, as 1200345316 + 65124900 = 34646^2 + 8070^2 .

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, 2727075 + ... + 2727538.

Almost surely, 2^1265470216 is an apocalyptic number.

It is an amenable number.

1265470216 is a deficient number, since it is larger than the sum of its proper divisors (1189106084).

1265470216 is a wasteful number, since it uses less digits than its factorization.

1265470216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5454648 (or 5454644 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 1265470216 is about 35573.4481882204. The cubic root of 1265470216 is about 1081.6430797042.

The spelling of 1265470216 in words is "one billion, two hundred sixty-five million, four hundred seventy thousand, two hundred sixteen".