20535234525 has 36 divisors (see below), whose sum is σ = 39610191348. Its totient is φ = 10109652480.

The previous prime is 20535234481. The next prime is 20535234563. The reversal of 20535234525 is 52543253502.

20535234525 is a `hidden beast` number, since 2 + 0 + 53 + 52 + 34 + 525 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 4648648761 + 15886585764 = 68181^2 + 126042^2 .

It is not a de Polignac number, because 20535234525 - 2¹³ = 20535226333 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20535234525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3507372 + ... + 3513221.

It is an arithmetic number, because the mean of its divisors is an integer number (1100283093).

Almost surely, 2^20535234525 is an apocalyptic number.

20535234525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20535234525 is a deficient number, since it is larger than the sum of its proper divisors (19074956823).

20535234525 is a wasteful number, since it uses less digits than its factorization.

20535234525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7020622 (or 7020614 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 36.

The spelling of 20535234525 in words is "twenty billion, five hundred thirty-five million, two hundred thirty-four thousand, five hundred twenty-five".