7661335125 has 32 divisors (see below), whose sum is σ = 12804764544. Its totient is φ = 4068000000.

The previous prime is 7661335111. The next prime is 7661335127. The reversal of 7661335125 is 5215331667.

It is not a de Polignac number, because 7661335125 - 2⁵ = 7661335093 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7661335127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40125 + ... + 130125.

It is an arithmetic number, because the mean of its divisors is an integer number (400148892).

Almost surely, 2^7661335125 is an apocalyptic number.

7661335125 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7661335125 is a deficient number, since it is larger than the sum of its proper divisors (5143429419).

7661335125 is a wasteful number, since it uses less digits than its factorization.

7661335125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90246 (or 90236 counting only the distinct ones).

The product of its digits is 113400, while the sum is 39.

The square root of 7661335125 is about 87529.0530338356. The cubic root of 7661335125 is about 1971.3700455403.

The spelling of 7661335125 in words is "seven billion, six hundred sixty-one million, three hundred thirty-five thousand, one hundred twenty-five".