20429325 has 108 divisors (see below), whose sum is σ = 45482580. Its totient is φ = 8709120.

The previous prime is 20429323. The next prime is 20429333. The reversal of 20429325 is 52392402.

It can be written as a sum of positive squares in 6 ways, for example, as 233289 + 20196036 = 483^2 + 4494^2 .

It is not a de Polignac number, because 20429325 - 2¹ = 20429323 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20429323) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 187371 + ... + 187479.

It is an arithmetic number, because the mean of its divisors is an integer number (421135).

Almost surely, 2^20429325 is an apocalyptic number.

20429325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20429325 is an abundant number, since it is smaller than the sum of its proper divisors (25053255).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20429325 is a wasteful number, since it uses less digits than its factorization.

20429325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 20429325 is about 4519.8810825065. The cubic root of 20429325 is about 273.3703061560.

The spelling of 20429325 in words is "twenty million, four hundred twenty-nine thousand, three hundred twenty-five".