25201213201 has 4 divisors (see below), whose sum is σ = 25202508772. Its totient is φ = 25199917632.

The previous prime is 25201213187. The next prime is 25201213231. The reversal of 25201213201 is 10231210252.

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 2233507600 + 22967705601 = 47260^2 + 151551^2 .

It is a cyclic number.

It is not a de Polignac number, because 25201213201 - 2¹⁹ = 25200688913 is a prime.

It is a super-2 number, since 2×25201213201² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25201213231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 618156 + ... + 657661.

It is an arithmetic number, because the mean of its divisors is an integer number (6300627193).

Almost surely, 2^25201213201 is an apocalyptic number.

It is an amenable number.

25201213201 is a deficient number, since it is larger than the sum of its proper divisors (1295571).

25201213201 is a wasteful number, since it uses less digits than its factorization.

25201213201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1295570.

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 25201213201 its reverse (10231210252), we get a palindrome (35432423453).

The spelling of 25201213201 in words is "twenty-five billion, two hundred one million, two hundred thirteen thousand, two hundred one".