125747655 has 32 divisors (see below), whose sum is σ = 221978880. Its totient is φ = 60276480.

The previous prime is 125747627. The next prime is 125747659. The reversal of 125747655 is 556747521.

It is a happy number.

It is not a de Polignac number, because 125747655 - 2⁶ = 125747591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125747659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10404 + ... + 18966.

It is an arithmetic number, because the mean of its divisors is an integer number (6936840).

Almost surely, 2^125747655 is an apocalyptic number.

125747655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

125747655 is a deficient number, since it is larger than the sum of its proper divisors (96231225).

125747655 is a wasteful number, since it uses less digits than its factorization.

125747655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8671.

The product of its digits is 294000, while the sum is 42.

The square root of 125747655 is about 11213.7261871333. The cubic root of 125747655 is about 500.9948923986.

The spelling of 125747655 in words is "one hundred twenty-five million, seven hundred forty-seven thousand, six hundred fifty-five".