10225355521 has 4 divisors (see below), whose sum is σ = 10290485332. Its totient is φ = 10160225712.

The previous prime is 10225355507. The next prime is 10225355587. The reversal of 10225355521 is 12555352201.

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 2328545025 + 7896810496 = 48255^2 + 88864^2 .

It is a cyclic number.

It is not a de Polignac number, because 10225355521 - 2¹⁵ = 10225322753 is a prime.

It is the 101121-st Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10225355221) by changing a digit.

It is a nontrivial repunit in base 101120.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32564670 + ... + 32564983.

It is an arithmetic number, because the mean of its divisors is an integer number (2572621333).

Almost surely, 2^10225355521 is an apocalyptic number.

It is an amenable number.

10225355521 is a deficient number, since it is larger than the sum of its proper divisors (65129811).

10225355521 is an equidigital number, since it uses as much as digits as its factorization.

10225355521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65129810.

The product of its (nonzero) digits is 15000, while the sum is 31.

The spelling of 10225355521 in words is "ten billion, two hundred twenty-five million, three hundred fifty-five thousand, five hundred twenty-one".