20629325 has 12 divisors (see below), whose sum is σ = 25641588. Its totient is φ = 16464000.

The previous prime is 20629319. The next prime is 20629327. The reversal of 20629325 is 52392602.

It can be written as a sum of positive squares in 6 ways, for example, as 2896804 + 17732521 = 1702^2 + 4211^2 .

It is not a de Polignac number, because 20629325 - 2⁴ = 20629309 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 (20629327) 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, 14339 + ... + 15711.

It is an arithmetic number, because the mean of its divisors is an integer number (2136799).

Almost surely, 2^20629325 is an apocalyptic number.

20629325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20629325 is a deficient number, since it is larger than the sum of its proper divisors (5012263).

20629325 is a wasteful number, since it uses less digits than its factorization.

20629325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984 (or 1979 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 20629325 is about 4541.9516730146. The cubic root of 20629325 is about 274.2594954038.

The spelling of 20629325 in words is "twenty million, six hundred twenty-nine thousand, three hundred twenty-five".