7745708225 has 12 divisors (see below), whose sum is σ = 9606317820. Its totient is φ = 6195508800.

The previous prime is 7745708221. The next prime is 7745708237. The reversal of 7745708225 is 5228075477.

It can be written as a sum of positive squares in 6 ways, for example, as 74926336 + 7670781889 = 8656^2 + 87583^2 .

It is not a de Polignac number, because 7745708225 - 2² = 7745708221 is a prime.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 7745708225.

It is not an unprimeable number, because it can be changed into a prime (7745708221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 144635 + ... + 190815.

It is an arithmetic number, because the mean of its divisors is an integer number (800526485).

Almost surely, 2^7745708225 is an apocalyptic number.

It is an amenable number.

7745708225 is a deficient number, since it is larger than the sum of its proper divisors (1860609595).

7745708225 is a wasteful number, since it uses less digits than its factorization.

7745708225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52900 (or 52895 counting only the distinct ones).

The product of its (nonzero) digits is 1097600, while the sum is 47.

The square root of 7745708225 is about 88009.7052886782. The cubic root of 7745708225 is about 1978.5804388878.

The spelling of 7745708225 in words is "seven billion, seven hundred forty-five million, seven hundred eight thousand, two hundred twenty-five".