125642768 has 20 divisors (see below), whose sum is σ = 244320300. Its totient is φ = 62592384.

The previous prime is 125642743. The next prime is 125642771. The reversal of 125642768 is 867246521.

It can be written as a sum of positive squares in 2 ways, for example, as 11751184 + 113891584 = 3428^2 + 10672^2 .

It is a super-2 number, since 2×125642768² = 31572210301403648, which contains 22 as substring.

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, 9743 + ... + 18606.

It is an arithmetic number, because the mean of its divisors is an integer number (12216015).

Almost surely, 2^125642768 is an apocalyptic number.

It is an amenable number.

125642768 is a deficient number, since it is larger than the sum of its proper divisors (118677532).

125642768 is a wasteful number, since it uses less digits than its factorization.

125642768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28634 (or 28628 counting only the distinct ones).

The product of its digits is 161280, while the sum is 41.

The square root of 125642768 is about 11209.0484877174. The cubic root of 125642768 is about 500.8555592019.

The spelling of 125642768 in words is "one hundred twenty-five million, six hundred forty-two thousand, seven hundred sixty-eight".