20179623025 has 9 divisors (see below), whose sum is σ = 25023613323. Its totient is φ = 16143130200.

The previous prime is 20179623017. The next prime is 20179623071. The reversal of 20179623025 is 52032697102.

The square root of 20179623025 is 142055.

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

It can be written as a sum of positive squares in only one way, i.e., 7264664289 + 12914958736 = 85233^2 + 113644^2 .

It is not a de Polignac number, because 20179623025 - 2³ = 20179623017 is a prime.

It is a super-4 number, since 4×20179623025⁴ (a number of 42 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

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 8 ways as a sum of consecutive naturals, for example, 696070 + ... + 724480.

Almost surely, 2^20179623025 is an apocalyptic number.

20179623025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20179623025 is the 142055-th square number.

20179623025 is the 71028-th centered octagonal number.

It is an amenable number.

20179623025 is a deficient number, since it is larger than the sum of its proper divisors (4843990298).

20179623025 is an frugal number, since it uses more digits than its factorization.

20179623025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56832 (or 28416 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

It can be divided in two parts, 20179 and 623025, that added together give a square (643204 = 802²).

The spelling of 20179623025 in words is "twenty billion, one hundred seventy-nine million, six hundred twenty-three thousand, twenty-five".