20534925 has 24 divisors (see below), whose sum is σ = 34265664. Its totient is φ = 10850560.

The previous prime is 20534893. The next prime is 20534933. The reversal of 20534925 is 52943502.

It is not a de Polignac number, because 20534925 - 2⁵ = 20534893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20534892 and 20534901.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7264 + ... + 9686.

It is an arithmetic number, because the mean of its divisors is an integer number (1427736).

Almost surely, 2^20534925 is an apocalyptic number.

20534925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20534925 is a deficient number, since it is larger than the sum of its proper divisors (13730739).

20534925 is a wasteful number, since it uses less digits than its factorization.

20534925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2549 (or 2544 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 20534925 is about 4531.5477488381. The cubic root of 20534925 is about 273.8405175945.

The spelling of 20534925 in words is "twenty million, five hundred thirty-four thousand, nine hundred twenty-five".