20461325 has 6 divisors (see below), whose sum is σ = 25372074. Its totient is φ = 16369040.

The previous prime is 20461321. The next prime is 20461349. The reversal of 20461325 is 52316402.

It can be written as a sum of positive squares in 3 ways, for example, as 3798601 + 16662724 = 1949^2 + 4082^2 .

It is not a de Polignac number, because 20461325 - 2² = 20461321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20461325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20461321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 409202 + ... + 409251.

It is an arithmetic number, because the mean of its divisors is an integer number (4228679).

Almost surely, 2^20461325 is an apocalyptic number.

20461325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20461325 is a deficient number, since it is larger than the sum of its proper divisors (4910749).

20461325 is an equidigital number, since it uses as much as digits as its factorization.

20461325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818463 (or 818458 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 20461325 is about 4523.4196135225. The cubic root of 20461325 is about 273.5129652387.

Adding to 20461325 its reverse (52316402), we get a palindrome (72777727).

The spelling of 20461325 in words is "twenty million, four hundred sixty-one thousand, three hundred twenty-five".