9725785377 has 16 divisors (see below), whose sum is σ = 16167539712. Its totient is φ = 5052355920.

The previous prime is 9725785319. The next prime is 9725785423. The reversal of 9725785377 is 7735875279.

It is a happy number.

It is not a de Polignac number, because 9725785377 - 2⁷ = 9725785249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9725785377.

It is not an unprimeable number, because it can be changed into a prime (9725785777) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21051253 + ... + 21051714.

It is an arithmetic number, because the mean of its divisors is an integer number (1010471232).

Almost surely, 2^9725785377 is an apocalyptic number.

It is an amenable number.

9725785377 is a deficient number, since it is larger than the sum of its proper divisors (6441754335).

9725785377 is a wasteful number, since it uses less digits than its factorization.

9725785377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42102988.

The product of its digits is 25930800, while the sum is 60.

The square root of 9725785377 is about 98619.3965556472. The cubic root of 9725785377 is about 2134.5593137099.

The spelling of 9725785377 in words is "nine billion, seven hundred twenty-five million, seven hundred eighty-five thousand, three hundred seventy-seven".