1295511216 has 40 divisors (see below), whose sum is σ = 3377454960. Its totient is φ = 427873536.

The previous prime is 1295511209. The next prime is 1295511221. The reversal of 1295511216 is 6121155921.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118575 + ... + 129038.

It is an arithmetic number, because the mean of its divisors is an integer number (84436374).

Almost surely, 2^1295511216 is an apocalyptic number.

1295511216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1295511216 is an abundant number, since it is smaller than the sum of its proper divisors (2081943744).

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

1295511216 is a wasteful number, since it uses less digits than its factorization.

1295511216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247733 (or 247727 counting only the distinct ones).

The product of its digits is 5400, while the sum is 33.

The square root of 1295511216 is about 35993.2106931293. The cubic root of 1295511216 is about 1090.1352737311.

The spelling of 1295511216 in words is "one billion, two hundred ninety-five million, five hundred eleven thousand, two hundred sixteen".