125037665 has 4 divisors (see below), whose sum is σ = 150045204. Its totient is φ = 100030128.

The previous prime is 125037641. The next prime is 125037667. The reversal of 125037665 is 566730521.

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 41113744 + 83923921 = 6412^2 + 9161^2 .

It is a cyclic number.

It is not a de Polignac number, because 125037665 - 2¹² = 125033569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125037667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12503762 + ... + 12503771.

It is an arithmetic number, because the mean of its divisors is an integer number (37511301).

Almost surely, 2^125037665 is an apocalyptic number.

It is an amenable number.

125037665 is a deficient number, since it is larger than the sum of its proper divisors (25007539).

125037665 is an equidigital number, since it uses as much as digits as its factorization.

125037665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25007538.

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 125037665 is about 11182.0241906374. The cubic root of 125037665 is about 500.0502149567.

The spelling of 125037665 in words is "one hundred twenty-five million, thirty-seven thousand, six hundred sixty-five".