1253335265 has 24 divisors (see below), whose sum is σ = 1861259328. Its totient is φ = 793316160.

The previous prime is 1253335261. The next prime is 1253335271. The reversal of 1253335265 is 5625333521.

It is not a de Polignac number, because 1253335265 - 2² = 1253335261 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1253335261) 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 23 ways as a sum of consecutive naturals, for example, 100031 + ... + 111860.

It is an arithmetic number, because the mean of its divisors is an integer number (77552472).

Almost surely, 2^1253335265 is an apocalyptic number.

It is an amenable number.

1253335265 is a deficient number, since it is larger than the sum of its proper divisors (607924063).

1253335265 is a wasteful number, since it uses less digits than its factorization.

1253335265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211929 (or 211916 counting only the distinct ones).

The product of its digits is 81000, while the sum is 35.

The square root of 1253335265 is about 35402.4754078016. The cubic root of 1253335265 is about 1078.1745755709.

Adding to 1253335265 its reverse (5625333521), we get a palindrome (6878668786).

The spelling of 1253335265 in words is "one billion, two hundred fifty-three million, three hundred thirty-five thousand, two hundred sixty-five".