9725769999 has 24 divisors (see below), whose sum is σ = 15328936272. Its totient is φ = 5893067520.

The previous prime is 9725769997. The next prime is 9725770001. The reversal of 9725769999 is 9999675279.

It is an interprime number because it is at equal distance from previous prime (9725769997) and next prime (9725770001).

It is not a de Polignac number, because 9725769999 - 2¹ = 9725769997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9725769997) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 589527 + ... + 605799.

It is an arithmetic number, because the mean of its divisors is an integer number (638705678).

Almost surely, 2^9725769999 is an apocalyptic number.

9725769999 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

9725769999 is a deficient number, since it is larger than the sum of its proper divisors (5603166273).

9725769999 is a wasteful number, since it uses less digits than its factorization.

9725769999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22327 (or 22324 counting only the distinct ones).

The product of its digits is 173604060, while the sum is 72.

The square root of 9725769999 is about 98619.3185892095. The cubic root of 9725769999 is about 2134.5581886844.

The spelling of 9725769999 in words is "nine billion, seven hundred twenty-five million, seven hundred sixty-nine thousand, nine hundred ninety-nine".