7811525201 has 2 divisors, whose sum is σ = 7811525202. Its totient is φ = 7811525200.

The previous prime is 7811525191. The next prime is 7811525209. The reversal of 7811525201 is 1025251187.

7811525201 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5432427025 + 2379098176 = 73705^2 + 48776^2 .

It is an emirp because it is prime and its reverse (1025251187) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7811525201 - 2¹⁰ = 7811524177 is a prime.

It is a super-2 number, since 2×7811525201² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7811525209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3905762600 + 3905762601.

It is an arithmetic number, because the mean of its divisors is an integer number (3905762601).

Almost surely, 2^7811525201 is an apocalyptic number.

It is an amenable number.

7811525201 is a deficient number, since it is larger than the sum of its proper divisors (1).

7811525201 is an equidigital number, since it uses as much as digits as its factorization.

7811525201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5600, while the sum is 32.

The square root of 7811525201 is about 88382.8331804316. The cubic root of 7811525201 is about 1984.1687836898.

Adding to 7811525201 its reverse (1025251187), we get a palindrome (8836776388).

The spelling of 7811525201 in words is "seven billion, eight hundred eleven million, five hundred twenty-five thousand, two hundred one".