20535215325 has 24 divisors (see below), whose sum is σ = 34673935488. Its totient is φ = 10719089280.

The previous prime is 20535215237. The next prime is 20535215353. The reversal of 20535215325 is 52351253502.

It is not a de Polignac number, because 20535215325 - 2²⁰ = 20534166749 is a prime.

It is a super-2 number, since 2×20535215325² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2909272 + ... + 2916321.

It is an arithmetic number, because the mean of its divisors is an integer number (1444747312).

Almost surely, 2^20535215325 is an apocalyptic number.

20535215325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20535215325 is a deficient number, since it is larger than the sum of its proper divisors (14138720163).

20535215325 is a wasteful number, since it uses less digits than its factorization.

20535215325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5825653 (or 5825648 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 33.

Adding to 20535215325 its reverse (52351253502), we get a palindrome (72886468827).

The spelling of 20535215325 in words is "twenty billion, five hundred thirty-five million, two hundred fifteen thousand, three hundred twenty-five".