1263085505 has 8 divisors (see below), whose sum is σ = 1653493824. Its totient is φ = 918607600.

The previous prime is 1263085489. The next prime is 1263085519. The reversal of 1263085505 is 5055803621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1263085505 - 2⁴ = 1263085489 is a prime.

It is a super-2 number, since 2×1263085505² = 3190769985882210050, which contains 22 as substring.

It is a Duffinian number.

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, 11482541 + ... + 11482650.

It is an arithmetic number, because the mean of its divisors is an integer number (206686728).

Almost surely, 2^1263085505 is an apocalyptic number.

It is an amenable number.

1263085505 is a deficient number, since it is larger than the sum of its proper divisors (390408319).

1263085505 is a wasteful number, since it uses less digits than its factorization.

1263085505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22965207.

The product of its (nonzero) digits is 36000, while the sum is 35.

The square root of 1263085505 is about 35539.9142514441. The cubic root of 1263085505 is about 1080.9632196103.

The spelling of 1263085505 in words is "one billion, two hundred sixty-three million, eighty-five thousand, five hundred five".