125552761 has 4 divisors (see below), whose sum is σ = 125593972. Its totient is φ = 125511552.

The previous prime is 125552753. The next prime is 125552851. The reversal of 125552761 is 167255521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51265600 + 74287161 = 7160^2 + 8619^2 .

It is a cyclic number.

It is not a de Polignac number, because 125552761 - 2³ = 125552753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125552731) 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 3 ways as a sum of consecutive naturals, for example, 15636 + ... + 22261.

It is an arithmetic number, because the mean of its divisors is an integer number (31398493).

Almost surely, 2^125552761 is an apocalyptic number.

It is an amenable number.

125552761 is a deficient number, since it is larger than the sum of its proper divisors (41211).

125552761 is an equidigital number, since it uses as much as digits as its factorization.

125552761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41210.

The product of its digits is 21000, while the sum is 34.

The square root of 125552761 is about 11205.0328424329. The cubic root of 125552761 is about 500.7359309465.

The spelling of 125552761 in words is "one hundred twenty-five million, five hundred fifty-two thousand, seven hundred sixty-one".