1153256505 has 8 divisors (see below), whose sum is σ = 1845210432. Its totient is φ = 615070128.

The previous prime is 1153256491. The next prime is 1153256549. The reversal of 1153256505 is 5056523511.

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

It is not a de Polignac number, because 1153256505 - 2⁵ = 1153256473 is a prime.

It is a super-3 number, since 3×1153256505³ (a number of 28 digits) contains 333 as substring.

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, 38441869 + ... + 38441898.

It is an arithmetic number, because the mean of its divisors is an integer number (230651304).

Almost surely, 2^1153256505 is an apocalyptic number.

1153256505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1153256505 is a deficient number, since it is larger than the sum of its proper divisors (691953927).

1153256505 is an equidigital number, since it uses as much as digits as its factorization.

1153256505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76883775.

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 1153256505 is about 33959.6305191915. The cubic root of 1153256505 is about 1048.6775505258.

The spelling of 1153256505 in words is "one billion, one hundred fifty-three million, two hundred fifty-six thousand, five hundred five".