20733625 has 32 divisors (see below), whose sum is σ = 29922048. Its totient is φ = 14176000.

The previous prime is 20733613. The next prime is 20733631. The reversal of 20733625 is 52633702.

It is not a de Polignac number, because 20733625 - 2¹⁹ = 20209337 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20733593 and 20733602.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22932 + ... + 23818.

It is an arithmetic number, because the mean of its divisors is an integer number (935064).

Almost surely, 2^20733625 is an apocalyptic number.

20733625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20733625 is a deficient number, since it is larger than the sum of its proper divisors (9188423).

20733625 is a wasteful number, since it uses less digits than its factorization.

20733625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930 (or 920 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 20733625 is about 4553.4190450693. The cubic root of 20733625 is about 274.7209290148.

The spelling of 20733625 in words is "twenty million, seven hundred thirty-three thousand, six hundred twenty-five".