7725661612 has 24 divisors (see below), whose sum is σ = 13679756496. Its totient is φ = 3817279488.

The previous prime is 7725661597. The next prime is 7725661627. The reversal of 7725661612 is 2161665277.

It is an interprime number because it is at equal distance from previous prime (7725661597) and next prime (7725661627).

It is a super-3 number, since 3×7725661612³ (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250428 + ... + 279580.

It is an arithmetic number, because the mean of its divisors is an integer number (569989854).

Almost surely, 2^7725661612 is an apocalyptic number.

It is an amenable number.

7725661612 is a deficient number, since it is larger than the sum of its proper divisors (5954094884).

7725661612 is a wasteful number, since it uses less digits than its factorization.

7725661612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29937 (or 29935 counting only the distinct ones).

The product of its digits is 211680, while the sum is 43.

The square root of 7725661612 is about 87895.7428548164. The cubic root of 7725661612 is about 1976.8720475061.

The spelling of 7725661612 in words is "seven billion, seven hundred twenty-five million, six hundred sixty-one thousand, six hundred twelve".