7851635725 has 24 divisors (see below), whose sum is σ = 10332463680. Its totient is φ = 5898213120.

The previous prime is 7851635723. The next prime is 7851635819. The reversal of 7851635725 is 5275361587.

It is not a de Polignac number, because 7851635725 - 2¹ = 7851635723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7851635723) 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, 165534 + ... + 207616.

It is an arithmetic number, because the mean of its divisors is an integer number (430519320).

Almost surely, 2^7851635725 is an apocalyptic number.

It is an amenable number.

7851635725 is a deficient number, since it is larger than the sum of its proper divisors (2480827955).

7851635725 is a wasteful number, since it uses less digits than its factorization.

7851635725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42549 (or 42544 counting only the distinct ones).

The product of its digits is 1764000, while the sum is 49.

The square root of 7851635725 is about 88609.4561827348. The cubic root of 7851635725 is about 1987.5590826680.

The spelling of 7851635725 in words is "seven billion, eight hundred fifty-one million, six hundred thirty-five thousand, seven hundred twenty-five".