1253435005 has 8 divisors (see below), whose sum is σ = 1507345632. Its totient is φ = 1000598928.

The previous prime is 1253434981. The next prime is 1253435011. The reversal of 1253435005 is 5005343521.

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

It is a cyclic number.

It is not a de Polignac number, because 1253435005 - 2¹⁵ = 1253402237 is a prime.

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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266067 + ... + 270736.

It is an arithmetic number, because the mean of its divisors is an integer number (188418204).

Almost surely, 2^1253435005 is an apocalyptic number.

It is an amenable number.

1253435005 is a deficient number, since it is larger than the sum of its proper divisors (253910627).

1253435005 is an equidigital number, since it uses as much as digits as its factorization.

1253435005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537275.

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 1253435005 is about 35403.8840383368. The cubic root of 1253435005 is about 1078.2031750693.

Adding to 1253435005 its reverse (5005343521), we get a palindrome (6258778526).

The spelling of 1253435005 in words is "one billion, two hundred fifty-three million, four hundred thirty-five thousand, five".