20625835 has 8 divisors (see below), whose sum is σ = 25420176. Its totient is φ = 16054560.

The previous prime is 20625827. The next prime is 20625841. The reversal of 20625835 is 53852602.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20625835 - 2³ = 20625827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20625797 and 20625806.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55561 + ... + 55930.

It is an arithmetic number, because the mean of its divisors is an integer number (3177522).

Almost surely, 2^20625835 is an apocalyptic number.

20625835 is a deficient number, since it is larger than the sum of its proper divisors (4794341).

20625835 is a wasteful number, since it uses less digits than its factorization.

20625835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111533.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 20625835 is about 4541.5674606902. The cubic root of 20625835 is about 274.2440284311.

The spelling of 20625835 in words is "twenty million, six hundred twenty-five thousand, eight hundred thirty-five".