20020835025 has 27 divisors (see below), whose sum is σ = 35863341969. Its totient is φ = 10676646720.

The previous prime is 20020834993. The next prime is 20020835039. The reversal of 20020835025 is 52053802002.

The square root of 20020835025 is 141495.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 68707521 + 19952127504 = 8289^2 + 141252^2 .

It is not a de Polignac number, because 20020835025 - 2⁵ = 20020834993 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 20020835025.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2117709 + ... + 2127141.

Almost surely, 2^20020835025 is an apocalyptic number.

20020835025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20020835025 is the 141495-th square number.

20020835025 is the 70748-th centered octagonal number.

It is an amenable number.

20020835025 is a deficient number, since it is larger than the sum of its proper divisors (15842506944).

20020835025 is an frugal number, since it uses more digits than its factorization.

20020835025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18882 (or 9441 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The spelling of 20020835025 in words is "twenty billion, twenty million, eight hundred thirty-five thousand, twenty-five".