24785865825 has 48 divisors (see below), whose sum is σ = 46873297536. Its totient is φ = 11321049600.

The previous prime is 24785865799. The next prime is 24785865869. The reversal of 24785865825 is 52856858742.

It is a happy number.

It is not a de Polignac number, because 24785865825 - 2¹⁰ = 24785864801 is a prime.

It is a super-2 number, since 2×24785865825² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 617365 + ... + 656285.

It is an arithmetic number, because the mean of its divisors is an integer number (976527032).

Almost surely, 2^24785865825 is an apocalyptic number.

24785865825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

24785865825 is a deficient number, since it is larger than the sum of its proper divisors (22087431711).

24785865825 is a wasteful number, since it uses less digits than its factorization.

24785865825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40154 (or 40149 counting only the distinct ones).

The product of its digits is 43008000, while the sum is 60.

The spelling of 24785865825 in words is "twenty-four billion, seven hundred eighty-five million, eight hundred sixty-five thousand, eight hundred twenty-five".