20348725 has 12 divisors (see below), whose sum is σ = 25471584. Its totient is φ = 16124720.

The previous prime is 20348719. The next prime is 20348729. The reversal of 20348725 is 52784302.

It is not a de Polignac number, because 20348725 - 2³ = 20348717 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 (20348729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1129 + ... + 6478.

It is an arithmetic number, because the mean of its divisors is an integer number (2122632).

Almost surely, 2^20348725 is an apocalyptic number.

20348725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20348725 is a deficient number, since it is larger than the sum of its proper divisors (5122859).

20348725 is a wasteful number, since it uses less digits than its factorization.

20348725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7724 (or 7719 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 20348725 is about 4510.9561070797. The cubic root of 20348725 is about 273.0103222134.

The spelling of 20348725 in words is "twenty million, three hundred forty-eight thousand, seven hundred twenty-five".