10525002221 has 2 divisors, whose sum is σ = 10525002222. Its totient is φ = 10525002220.

The previous prime is 10525002181. The next prime is 10525002259. The reversal of 10525002221 is 12220052501.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7923492196 + 2601510025 = 89014^2 + 51005^2 .

It is a cyclic number.

It is not a de Polignac number, because 10525002221 - 2¹⁰ = 10525001197 is a prime.

It is a super-2 number, since 2×10525002221² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10525002193 and 10525002202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10522002221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5262501110 + 5262501111.

It is an arithmetic number, because the mean of its divisors is an integer number (5262501111).

Almost surely, 2^10525002221 is an apocalyptic number.

It is an amenable number.

10525002221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10525002221 is an equidigital number, since it uses as much as digits as its factorization.

10525002221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 400, while the sum is 20.

Adding to 10525002221 its reverse (12220052501), we get a palindrome (22745054722).

The spelling of 10525002221 in words is "ten billion, five hundred twenty-five million, two thousand, two hundred twenty-one".