125547665 has 8 divisors (see below), whose sum is σ = 151106280. Its totient is φ = 100138752.

The previous prime is 125547661. The next prime is 125547671. The reversal of 125547665 is 566745521.

It can be written as a sum of positive squares in 4 ways, for example, as 85264 + 125462401 = 292^2 + 11201^2 .

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 125547665 - 2² = 125547661 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (125547661) 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, 35570 + ... + 38939.

It is an arithmetic number, because the mean of its divisors is an integer number (18888285).

Almost surely, 2^125547665 is an apocalyptic number.

It is an amenable number.

125547665 is a deficient number, since it is larger than the sum of its proper divisors (25558615).

125547665 is an equidigital number, since it uses as much as digits as its factorization.

125547665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74851.

The product of its digits is 252000, while the sum is 41.

The square root of 125547665 is about 11204.8054423091. The cubic root of 125547665 is about 500.7291561457.

The spelling of 125547665 in words is "one hundred twenty-five million, five hundred forty-seven thousand, six hundred sixty-five".