25322420405 has 8 divisors (see below), whose sum is σ = 30390123192. Its totient is φ = 20255790528.

The previous prime is 25322420293. The next prime is 25322420413. The reversal of 25322420405 is 50402422352.

It can be written as a sum of positive squares in 4 ways, for example, as 14893517521 + 10428902884 = 122039^2 + 102122^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25322420405 - 2²⁶ = 25255311541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215354 + ... + 311483.

It is an arithmetic number, because the mean of its divisors is an integer number (3798765399).

Almost surely, 2^25322420405 is an apocalyptic number.

It is an amenable number.

25322420405 is a deficient number, since it is larger than the sum of its proper divisors (5067702787).

25322420405 is an equidigital number, since it uses as much as digits as its factorization.

25322420405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536455.

The product of its (nonzero) digits is 19200, while the sum is 29.

Adding to 25322420405 its reverse (50402422352), we get a palindrome (75724842757).

The spelling of 25322420405 in words is "twenty-five billion, three hundred twenty-two million, four hundred twenty thousand, four hundred five".