20625079 has 8 divisors (see below), whose sum is σ = 21422720. Its totient is φ = 19841976.

The previous prime is 20625071. The next prime is 20625103. The reversal of 20625079 is 97052602.

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

It is a cyclic number.

It is not a de Polignac number, because 20625079 - 2³ = 20625071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20625079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20625071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 699 + ... + 6460.

It is an arithmetic number, because the mean of its divisors is an integer number (2677840).

Almost surely, 2^20625079 is an apocalyptic number.

20625079 is a deficient number, since it is larger than the sum of its proper divisors (797641).

20625079 is an equidigital number, since it uses as much as digits as its factorization.

20625079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7269.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 20625079 is about 4541.4842287517. The cubic root of 20625079 is about 274.2406777624.

The spelling of 20625079 in words is "twenty million, six hundred twenty-five thousand, seventy-nine".