9925242230521 has 4 divisors (see below), whose sum is σ = 9926430463732. Its totient is φ = 9924053997312.

The previous prime is 9925242230467. The next prime is 9925242230531. The reversal of 9925242230521 is 1250322425299.

9925242230521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 8936482466025 + 988759764496 = 2989395^2 + 994364^2 .

It is a cyclic number.

It is not a de Polignac number, because 9925242230521 - 2⁹ = 9925242230009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9925242230531) 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, 594104076 + ... + 594120781.

It is an arithmetic number, because the mean of its divisors is an integer number (2481607615933).

Almost surely, 2^{9925242230521} is an apocalyptic number.

It is an amenable number.

9925242230521 is a deficient number, since it is larger than the sum of its proper divisors (1188233211).

9925242230521 is a wasteful number, since it uses less digits than its factorization.

9925242230521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188233210.

The product of its (nonzero) digits is 777600, while the sum is 46.

The spelling of 9925242230521 in words is "nine trillion, nine hundred twenty-five billion, two hundred forty-two million, two hundred thirty thousand, five hundred twenty-one".