1253345345 has 64 divisors (see below), whose sum is σ = 1868451840. Its totient is φ = 788659200.

The previous prime is 1253345339. The next prime is 1253345351. The reversal of 1253345345 is 5435433521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1253345339) and next prime (1253345351).

It is not a de Polignac number, because 1253345345 - 2¹⁰ = 1253344321 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1919039 + ... + 1919691.

It is an arithmetic number, because the mean of its divisors is an integer number (29194560).

Almost surely, 2^1253345345 is an apocalyptic number.

It is an amenable number.

1253345345 is a deficient number, since it is larger than the sum of its proper divisors (615106495).

1253345345 is a wasteful number, since it uses less digits than its factorization.

1253345345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786.

The product of its digits is 108000, while the sum is 35.

The square root of 1253345345 is about 35402.6177704418. The cubic root of 1253345345 is about 1078.1774659842.

Adding to 1253345345 its reverse (5435433521), we get a palindrome (6688778866).

The spelling of 1253345345 in words is "one billion, two hundred fifty-three million, three hundred forty-five thousand, three hundred forty-five".