20934825 has 12 divisors (see below), whose sum is σ = 34612368. Its totient is φ = 11165200.

The previous prime is 20934821. The next prime is 20934863. The reversal of 20934825 is 52843902.

It is a happy number.

It is not a de Polignac number, because 20934825 - 2² = 20934821 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20934821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139491 + ... + 139640.

It is an arithmetic number, because the mean of its divisors is an integer number (2884364).

Almost surely, 2^20934825 is an apocalyptic number.

20934825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20934825 is a deficient number, since it is larger than the sum of its proper divisors (13677543).

20934825 is a wasteful number, since it uses less digits than its factorization.

20934825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279144 (or 279139 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 20934825 is about 4575.4589933689. The cubic root of 20934825 is about 275.6067045821.

The spelling of 20934825 in words is "twenty million, nine hundred thirty-four thousand, eight hundred twenty-five".