20625365 has 8 divisors (see below), whose sum is σ = 25826688. Its totient is φ = 15782800.

The previous prime is 20625361. The next prime is 20625377. The reversal of 20625365 is 56352602.

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 20625365 - 2² = 20625361 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20625361) 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, 89561 + ... + 89790.

It is an arithmetic number, because the mean of its divisors is an integer number (3228336).

Almost surely, 2^20625365 is an apocalyptic number.

It is an amenable number.

20625365 is a deficient number, since it is larger than the sum of its proper divisors (5201323).

20625365 is a wasteful number, since it uses less digits than its factorization.

20625365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179379.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 20625365 is about 4541.5157161459. The cubic root of 20625365 is about 274.2419453530.

Adding to 20625365 its reverse (56352602), we get a palindrome (76977967).

The spelling of 20625365 in words is "twenty million, six hundred twenty-five thousand, three hundred sixty-five".