25212205201 has 4 divisors (see below), whose sum is σ = 25212725812. Its totient is φ = 25211684592.

The previous prime is 25212205163. The next prime is 25212205217. The reversal of 25212205201 is 10250221252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23857891600 + 1354313601 = 154460^2 + 36801^2 .

It is a cyclic number.

It is not a de Polignac number, because 25212205201 - 2²³ = 25203816593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25212205801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179250 + ... + 287323.

It is an arithmetic number, because the mean of its divisors is an integer number (6303181453).

Almost surely, 2^25212205201 is an apocalyptic number.

It is an amenable number.

25212205201 is a deficient number, since it is larger than the sum of its proper divisors (520611).

25212205201 is an equidigital number, since it uses as much as digits as its factorization.

25212205201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520610.

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 25212205201 its reverse (10250221252), we get a palindrome (35462426453).

The spelling of 25212205201 in words is "twenty-five billion, two hundred twelve million, two hundred five thousand, two hundred one".