7849405625 has 10 divisors (see below), whose sum is σ = 9808618050. Its totient is φ = 6279524000.

The previous prime is 7849405621. The next prime is 7849405633. The reversal of 7849405625 is 5265049487.

It can be written as a sum of positive squares in 5 ways, for example, as 3771433744 + 4077971881 = 61412^2 + 63859^2 .

It is not a de Polignac number, because 7849405625 - 2² = 7849405621 is a prime.

It is a super-2 number, since 2×7849405625² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7849405621) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6278900 + ... + 6280149.

It is an arithmetic number, because the mean of its divisors is an integer number (980861805).

Almost surely, 2^7849405625 is an apocalyptic number.

It is an amenable number.

7849405625 is a deficient number, since it is larger than the sum of its proper divisors (1959212425).

7849405625 is an equidigital number, since it uses as much as digits as its factorization.

7849405625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12559069 (or 12559054 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 50.

The square root of 7849405625 is about 88596.8714176748. The cubic root of 7849405625 is about 1987.3708893887.

The spelling of 7849405625 in words is "seven billion, eight hundred forty-nine million, four hundred five thousand, six hundred twenty-five".