1253055005 has 4 divisors (see below), whose sum is σ = 1503666012. Its totient is φ = 1002444000.

The previous prime is 1253054981. The next prime is 1253055017. The reversal of 1253055005 is 5005503521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5005503521 = 18097 ⋅276593.

It can be written as a sum of positive squares in 2 ways, for example, as 522488164 + 730566841 = 22858^2 + 27029^2 .

It is not a de Polignac number, because 1253055005 - 2¹⁴ = 1253038621 is a prime.

It is a super-4 number, since 4×1253055005⁴ (a number of 37 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125305496 + ... + 125305505.

It is an arithmetic number, because the mean of its divisors is an integer number (375916503).

Almost surely, 2^1253055005 is an apocalyptic number.

It is an amenable number.

1253055005 is a deficient number, since it is larger than the sum of its proper divisors (250611007).

1253055005 is an equidigital number, since it uses as much as digits as its factorization.

1253055005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250611006.

The product of its (nonzero) digits is 3750, while the sum is 26.

The square root of 1253055005 is about 35398.5169887101. The cubic root of 1253055005 is about 1078.0942055532.

Adding to 1253055005 its reverse (5005503521), we get a palindrome (6258558526).

The spelling of 1253055005 in words is "one billion, two hundred fifty-three million, fifty-five thousand, five".