7785257485 has 8 divisors (see below), whose sum is σ = 9361495296. Its totient is φ = 6215415120.

The previous prime is 7785257479. The next prime is 7785257497. The reversal of 7785257485 is 5847525877.

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

It is not a de Polignac number, because 7785257485 - 2¹⁷ = 7785126413 is a prime.

It is a super-2 number, since 2×7785257485² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1596181 + ... + 1601050.

It is an arithmetic number, because the mean of its divisors is an integer number (1170186912).

Almost surely, 2^7785257485 is an apocalyptic number.

It is an amenable number.

7785257485 is a deficient number, since it is larger than the sum of its proper divisors (1576237811).

7785257485 is a wasteful number, since it uses less digits than its factorization.

7785257485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3197723.

The product of its digits is 21952000, while the sum is 58.

The square root of 7785257485 is about 88234.1061324928. The cubic root of 7785257485 is about 1981.9422397578.

The spelling of 7785257485 in words is "seven billion, seven hundred eighty-five million, two hundred fifty-seven thousand, four hundred eighty-five".