1272285505 has 16 divisors (see below), whose sum is σ = 1644477120. Its totient is φ = 941830848.

The previous prime is 1272285463. The next prime is 1272285541. The reversal of 1272285505 is 5055822721.

1272285505 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1272285505 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151642 + ... + 159811.

It is an arithmetic number, because the mean of its divisors is an integer number (102779820).

Almost surely, 2^1272285505 is an apocalyptic number.

It is an amenable number.

1272285505 is a deficient number, since it is larger than the sum of its proper divisors (372191615).

1272285505 is a wasteful number, since it uses less digits than its factorization.

1272285505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311520.

The product of its (nonzero) digits is 56000, while the sum is 37.

The square root of 1272285505 is about 35669.1113570271. Note that the first 3 decimals coincide. The cubic root of 1272285505 is about 1083.5813621182.

The spelling of 1272285505 in words is "one billion, two hundred seventy-two million, two hundred eighty-five thousand, five hundred five".