9821052425 has 12 divisors (see below), whose sum is σ = 12193409676. Its totient is φ = 7846968000.

The previous prime is 9821052421. The next prime is 9821052457. The reversal of 9821052425 is 5242501289.

It can be written as a sum of positive squares in 6 ways, for example, as 2099564041 + 7721488384 = 45821^2 + 87872^2 .

It is not a de Polignac number, because 9821052425 - 2² = 9821052421 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9821052421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 226526 + ... + 266375.

It is an arithmetic number, because the mean of its divisors is an integer number (1016117473).

Almost surely, 2^9821052425 is an apocalyptic number.

It is an amenable number.

9821052425 is a deficient number, since it is larger than the sum of its proper divisors (2372357251).

9821052425 is a wasteful number, since it uses less digits than its factorization.

9821052425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493708 (or 493703 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 9821052425 is about 99101.2231256507. The cubic root of 9821052425 is about 2141.5062346242.

The spelling of 9821052425 in words is "nine billion, eight hundred twenty-one million, fifty-two thousand, four hundred twenty-five".