1253506065 has 32 divisors (see below), whose sum is σ = 2324422656. Its totient is φ = 564957120.

The previous prime is 1253506043. The next prime is 1253506073. The reversal of 1253506065 is 5606053521.

1253506065 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1253506065 - 2²⁰ = 1252457489 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76617 + ... + 91526.

It is an arithmetic number, because the mean of its divisors is an integer number (72638208).

Almost surely, 2^1253506065 is an apocalyptic number.

1253506065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1253506065 is a deficient number, since it is larger than the sum of its proper divisors (1070916591).

1253506065 is a wasteful number, since it uses less digits than its factorization.

1253506065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168229.

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 1253506065 is about 35404.8875863206. The cubic root of 1253506065 is about 1078.2235499244.

Adding to 1253506065 its reverse (5606053521), we get a palindrome (6859559586).

The spelling of 1253506065 in words is "one billion, two hundred fifty-three million, five hundred six thousand, sixty-five".