20772125 has 16 divisors (see below), whose sum is σ = 28282176. Its totient is φ = 15106000.

The previous prime is 20772107. The next prime is 20772137. The reversal of 20772125 is 52127702.

It is not a de Polignac number, because 20772125 - 2⁶ = 20772061 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20772094 and 20772103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6179 + ... + 8928.

It is an arithmetic number, because the mean of its divisors is an integer number (1767636).

Almost surely, 2^20772125 is an apocalyptic number.

20772125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20772125 is a deficient number, since it is larger than the sum of its proper divisors (7510051).

20772125 is a wasteful number, since it uses less digits than its factorization.

20772125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15133 (or 15123 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 20772125 is about 4557.6446768040. The cubic root of 20772125 is about 274.8908657865.

Adding to 20772125 its reverse (52127702), we get a palindrome (72899827).

The spelling of 20772125 in words is "twenty million, seven hundred seventy-two thousand, one hundred twenty-five".