253520225153531 has 32 divisors (see below), whose sum is σ = 297006689937408. Its totient is φ = 211869235630080.

The previous prime is 253520225153501. The next prime is 253520225153539. The reversal of 253520225153531 is 135351522025352.

It is a de Polignac number, because none of the positive numbers 2^k-253520225153531 is a prime.

It is a super-2 number, since 2×253520225153531² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253520225153539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4097530526 + ... + 4097592396.

It is an arithmetic number, because the mean of its divisors is an integer number (9281459060544).

Almost surely, 2^{253520225153531} is an apocalyptic number.

253520225153531 is a deficient number, since it is larger than the sum of its proper divisors (43486464783877).

253520225153531 is a wasteful number, since it uses less digits than its factorization.

253520225153531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86091.

The product of its (nonzero) digits is 1350000, while the sum is 44.

Adding to 253520225153531 its reverse (135351522025352), we get a palindrome (388871747178883).

The spelling of 253520225153531 in words is "two hundred fifty-three trillion, five hundred twenty billion, two hundred twenty-five million, one hundred fifty-three thousand, five hundred thirty-one".