7856738925 has 96 divisors (see below), whose sum is σ = 15688043520. Its totient is φ = 3389299200.

The previous prime is 7856738917. The next prime is 7856738927. The reversal of 7856738925 is 5298376587.

It is not a de Polignac number, because 7856738925 - 2³ = 7856738917 is a prime.

It is a super-2 number, since 2×7856738925² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7856738927) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2801574 + ... + 2804376.

It is an arithmetic number, because the mean of its divisors is an integer number (163417120).

Almost surely, 2^7856738925 is an apocalyptic number.

7856738925 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7856738925 is a deficient number, since it is larger than the sum of its proper divisors (7831304595).

7856738925 is a wasteful number, since it uses less digits than its factorization.

7856738925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3123 (or 3118 counting only the distinct ones).

The product of its digits is 25401600, while the sum is 60.

The square root of 7856738925 is about 88638.2475289308. The cubic root of 7856738925 is about 1987.9895965628.

The spelling of 7856738925 in words is "seven billion, eight hundred fifty-six million, seven hundred thirty-eight thousand, nine hundred twenty-five".