125540710577 has 8 divisors (see below), whose sum is σ = 133379134056. Its totient is φ = 117752695552.

The previous prime is 125540710573. The next prime is 125540710597. The reversal of 125540710577 is 775017045521.

It can be written as a sum of positive squares in 4 ways, for example, as 47548419136 + 77992291441 = 218056^2 + 279271^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125540710577 - 2² = 125540710573 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125540710573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12596978 + ... + 12606939.

It is an arithmetic number, because the mean of its divisors is an integer number (16672391757).

Almost surely, 2^125540710577 is an apocalyptic number.

125540710577 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

125540710577 is a deficient number, since it is larger than the sum of its proper divisors (7838423479).

125540710577 is a wasteful number, since it uses less digits than its factorization.

125540710577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25204227.

The product of its (nonzero) digits is 343000, while the sum is 44.

The spelling of 125540710577 in words is "one hundred twenty-five billion, five hundred forty million, seven hundred ten thousand, five hundred seventy-seven".