1259955216 has 80 divisors (see below), whose sum is σ = 3894750720. Its totient is φ = 387676800.

The previous prime is 1259955197. The next prime is 1259955239. The reversal of 1259955216 is 6125599521.

1259955216 is a `hidden beast` number, since 1 + 2 + 5 + 99 + 552 + 1 + 6 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106560 + ... + 117791.

It is an arithmetic number, because the mean of its divisors is an integer number (48684384).

Almost surely, 2^1259955216 is an apocalyptic number.

1259955216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1259955216 is an abundant number, since it is smaller than the sum of its proper divisors (2634795504).

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

1259955216 is a wasteful number, since it uses less digits than its factorization.

1259955216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224381 (or 224369 counting only the distinct ones).

The product of its digits is 243000, while the sum is 45.

The square root of 1259955216 is about 35495.8478698566. The cubic root of 1259955216 is about 1080.0695017001.

The spelling of 1259955216 in words is "one billion, two hundred fifty-nine million, nine hundred fifty-five thousand, two hundred sixteen".