20776025 has 24 divisors (see below), whose sum is σ = 27379200. Its totient is φ = 15595200.

The previous prime is 20775991. The next prime is 20776033. The reversal of 20776025 is 52067702.

It is a happy number.

It is not a de Polignac number, because 20776025 - 2⁶ = 20775961 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 90611 + ... + 90839.

It is an arithmetic number, because the mean of its divisors is an integer number (1140800).

Almost surely, 2^20776025 is an apocalyptic number.

20776025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20776025 is a deficient number, since it is larger than the sum of its proper divisors (6603175).

20776025 is a wasteful number, since it uses less digits than its factorization.

20776025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449 (or 444 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 20776025 is about 4558.0725092960. The cubic root of 20776025 is about 274.9080684446.

The spelling of 20776025 in words is "twenty million, seven hundred seventy-six thousand, twenty-five".