1253347285 has 4 divisors (see below), whose sum is σ = 1504016748. Its totient is φ = 1002677824.

The previous prime is 1253347243. The next prime is 1253347289. The reversal of 1253347285 is 5827433521.

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 184253476 + 1069093809 = 13574^2 + 32697^2 .

It is a cyclic number.

It is not a de Polignac number, because 1253347285 - 2¹⁷ = 1253216213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253347289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125334724 + ... + 125334733.

It is an arithmetic number, because the mean of its divisors is an integer number (376004187).

Almost surely, 2^1253347285 is an apocalyptic number.

It is an amenable number.

1253347285 is a deficient number, since it is larger than the sum of its proper divisors (250669463).

1253347285 is an equidigital number, since it uses as much as digits as its factorization.

1253347285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250669462.

The product of its digits is 201600, while the sum is 40.

The square root of 1253347285 is about 35402.6451695350. The cubic root of 1253347285 is about 1078.1780222722.

The spelling of 1253347285 in words is "one billion, two hundred fifty-three million, three hundred forty-seven thousand, two hundred eighty-five".