1253160005 has 4 divisors (see below), whose sum is σ = 1503792012. Its totient is φ = 1002528000.

The previous prime is 1253159987. The next prime is 1253160031. The reversal of 1253160005 is 5000613521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 937706884 + 315453121 = 30622^2 + 17761^2 .

It is not a de Polignac number, because 1253160005 - 2²⁰ = 1252111429 is a prime.

It is a super-3 number, since 3×1253160005³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125315996 + ... + 125316005.

It is an arithmetic number, because the mean of its divisors is an integer number (375948003).

Almost surely, 2^1253160005 is an apocalyptic number.

It is an amenable number.

1253160005 is a deficient number, since it is larger than the sum of its proper divisors (250632007).

1253160005 is an equidigital number, since it uses as much as digits as its factorization.

1253160005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250632006.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 1253160005 is about 35400.0000706215. Note that the first 4 decimals coincide. The cubic root of 1253160005 is about 1078.1243177535.

Adding to 1253160005 its reverse (5000613521), we get a palindrome (6253773526).

The spelling of 1253160005 in words is "one billion, two hundred fifty-three million, one hundred sixty thousand, five".