9825404261 has 8 divisors (see below), whose sum is σ = 10029351384. Its totient is φ = 9622840320.

The previous prime is 9825404257. The next prime is 9825404263. The reversal of 9825404261 is 1624045289.

It can be written as a sum of positive squares in 4 ways, for example, as 352275361 + 9473128900 = 18769^2 + 97330^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9825404261 - 2² = 9825404257 is a prime.

It is a super-2 number, since 2×9825404261² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9825404263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331436 + ... + 359861.

It is an arithmetic number, because the mean of its divisors is an integer number (1253668923).

Almost surely, 2^9825404261 is an apocalyptic number.

It is an amenable number.

9825404261 is a deficient number, since it is larger than the sum of its proper divisors (203947123).

9825404261 is a wasteful number, since it uses less digits than its factorization.

9825404261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691591.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 9825404261 is about 99123.1772140098. The cubic root of 9825404261 is about 2141.8224976658.

The spelling of 9825404261 in words is "nine billion, eight hundred twenty-five million, four hundred four thousand, two hundred sixty-one".