16305256253 has 32 divisors (see below), whose sum is σ = 19346584320. Its totient is φ = 13547036160.

The previous prime is 16305256229. The next prime is 16305256267. The reversal of 16305256253 is 35265250361.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16305256253 is a prime.

It is a super-2 number, since 2×16305256253² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16305256453) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9539963 + ... + 9541671.

It is an arithmetic number, because the mean of its divisors is an integer number (604580760).

Almost surely, 2^16305256253 is an apocalyptic number.

16305256253 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

16305256253 is a deficient number, since it is larger than the sum of its proper divisors (3041328067).

16305256253 is a wasteful number, since it uses less digits than its factorization.

16305256253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2357.

The product of its (nonzero) digits is 162000, while the sum is 38.

The spelling of 16305256253 in words is "sixteen billion, three hundred five million, two hundred fifty-six thousand, two hundred fifty-three".