10025252221 has 4 divisors (see below), whose sum is σ = 10027557532. Its totient is φ = 10022946912.

The previous prime is 10025252203. The next prime is 10025252267. The reversal of 10025252221 is 12225252001.

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 5835279321 + 4189972900 = 76389^2 + 64730^2 .

It is a cyclic number.

It is not a de Polignac number, because 10025252221 - 2¹⁵ = 10025219453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10025252192 and 10025252201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10025252521) 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, 1146120 + ... + 1154833.

It is an arithmetic number, because the mean of its divisors is an integer number (2506889383).

Almost surely, 2^10025252221 is an apocalyptic number.

It is an amenable number.

10025252221 is a deficient number, since it is larger than the sum of its proper divisors (2305311).

10025252221 is an equidigital number, since it uses as much as digits as its factorization.

10025252221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2305310.

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

The spelling of 10025252221 in words is "ten billion, twenty-five million, two hundred fifty-two thousand, two hundred twenty-one".