1253578005 has 16 divisors (see below), whose sum is σ = 2228583360. Its totient is φ = 668574864.

The previous prime is 1253578003. The next prime is 1253578009. The reversal of 1253578005 is 5008753521.

It is not a de Polignac number, because 1253578005 - 2¹ = 1253578003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253578003) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4642747 + ... + 4643016.

It is an arithmetic number, because the mean of its divisors is an integer number (139286460).

Almost surely, 2^1253578005 is an apocalyptic number.

1253578005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1253578005 is a deficient number, since it is larger than the sum of its proper divisors (975005355).

1253578005 is an equidigital number, since it uses as much as digits as its factorization.

1253578005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9285777 (or 9285771 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The square root of 1253578005 is about 35405.9035331680. The cubic root of 1253578005 is about 1078.2441763153.

The spelling of 1253578005 in words is "one billion, two hundred fifty-three million, five hundred seventy-eight thousand, five".