253321225533 has 12 divisors (see below), whose sum is σ = 375797854588. Its totient is φ = 164316470400.

The previous prime is 253321225529. The next prime is 253321225583. The reversal of 253321225533 is 335522123352.

253321225533 is a `hidden beast` number, since 2 + 53 + 32 + 1 + 22 + 553 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 115574841369 + 137746384164 = 339963^2 + 371142^2 .

It is not a de Polignac number, because 253321225533 - 2² = 253321225529 is a prime.

It is a super-2 number, since 2×253321225533² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253321225583) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 380361868 + ... + 380362533.

Almost surely, 2^253321225533 is an apocalyptic number.

It is an amenable number.

253321225533 is a deficient number, since it is larger than the sum of its proper divisors (122476629055).

253321225533 is a wasteful number, since it uses less digits than its factorization.

253321225533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760724444 (or 760724441 counting only the distinct ones).

The product of its digits is 162000, while the sum is 36.

Adding to 253321225533 its reverse (335522123352), we get a palindrome (588843348885).

The spelling of 253321225533 in words is "two hundred fifty-three billion, three hundred twenty-one million, two hundred twenty-five thousand, five hundred thirty-three".