7725668980 has 12 divisors (see below), whose sum is σ = 16223904900. Its totient is φ = 3090267584.

The previous prime is 7725668957. The next prime is 7725669043. The reversal of 7725668980 is 898665277.

It can be written as a sum of positive squares in 2 ways, for example, as 2549442064 + 5176226916 = 50492^2 + 71946^2 .

It is a super-2 number, since 2×7725668980² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193141705 + ... + 193141744.

It is an arithmetic number, because the mean of its divisors is an integer number (1351992075).

Almost surely, 2^7725668980 is an apocalyptic number.

It is an amenable number.

7725668980 is an abundant number, since it is smaller than the sum of its proper divisors (8498235920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7725668980 is a wasteful number, since it uses less digits than its factorization.

7725668980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386283458 (or 386283456 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 58.

The square root of 7725668980 is about 87895.7847680991. The cubic root of 7725668980 is about 1976.8726759566.

The spelling of 7725668980 in words is "seven billion, seven hundred twenty-five million, six hundred sixty-eight thousand, nine hundred eighty".