20930579250025 has 27 divisors (see below), whose sum is σ = 26014618982469. Its totient is φ = 16705392942720.

The previous prime is 20930579249959. The next prime is 20930579250041. The reversal of 20930579250025 is 52005297503902.

The square root of 20930579250025 is 4574995.

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 14116053721 + 20916463196304 = 118811^2 + 4573452^2 .

It is not a de Polignac number, because 20930579250025 - 2⁷ = 20930579249897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 13564859404 + ... + 13564860946.

Almost surely, 2^{20930579250025} is an apocalyptic number.

20930579250025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20930579250025 is the 4574995-th square number.

20930579250025 is the 2287498-th centered octagonal number.

It is an amenable number.

20930579250025 is a deficient number, since it is larger than the sum of its proper divisors (5084039732444).

20930579250025 is an frugal number, since it uses more digits than its factorization.

20930579250025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4282 (or 2141 counting only the distinct ones).

The product of its (nonzero) digits is 1701000, while the sum is 49.

The spelling of 20930579250025 in words is "twenty trillion, nine hundred thirty billion, five hundred seventy-nine million, two hundred fifty thousand, twenty-five".