20922176025 has 27 divisors (see below), whose sum is σ = 37477828479. Its totient is φ = 11157336720.

The previous prime is 20922176017. The next prime is 20922176039. The reversal of 20922176025 is 52067122902.

It is a happy number.

The square root of 20922176025 is 144645.

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

20922176025 is a `hidden beast` number, since 20 + 9 + 2 + 21 + 7 + 602 + 5 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7531983369 + 13390192656 = 86787^2 + 115716^2 .

It is not a de Polignac number, because 20922176025 - 2³ = 20922176017 is a prime.

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, 2164854 + ... + 2174496.

Almost surely, 2^20922176025 is an apocalyptic number.

20922176025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20922176025 is the 144645-th square number.

20922176025 is the 72323-rd centered octagonal number.

It is an amenable number.

20922176025 is a deficient number, since it is larger than the sum of its proper divisors (16555652454).

20922176025 is an frugal number, since it uses more digits than its factorization.

20922176025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19302 (or 9651 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

Multiplying 20922176025 by its sum of digits (36), we get a square (753198336900 = 867870²).

Adding to 20922176025 its reverse (52067122902), we get a palindrome (72989298927).

The spelling of 20922176025 in words is "twenty billion, nine hundred twenty-two million, one hundred seventy-six thousand, twenty-five".