20848625 has 16 divisors (see below), whose sum is σ = 29737344. Its totient is φ = 14295600.

The previous prime is 20848621. The next prime is 20848631. The reversal of 20848625 is 52684802.

It is not a de Polignac number, because 20848625 - 2² = 20848621 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20848621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11039 + ... + 12788.

It is an arithmetic number, because the mean of its divisors is an integer number (1858584).

Almost surely, 2^20848625 is an apocalyptic number.

20848625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20848625 is a deficient number, since it is larger than the sum of its proper divisors (8888719).

20848625 is an equidigital number, since it uses as much as digits as its factorization.

20848625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23849 (or 23839 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 20848625 is about 4566.0294567600. The cubic root of 20848625 is about 275.2279102375.

The spelling of 20848625 in words is "twenty million, eight hundred forty-eight thousand, six hundred twenty-five".