125408065 has 16 divisors (see below), whose sum is σ = 159680592. Its totient is φ = 94224384.

The previous prime is 125408057. The next prime is 125408071. The reversal of 125408065 is 560804521.

It can be written as a sum of positive squares in 8 ways, for example, as 18326961 + 107081104 = 4281^2 + 10348^2 .

It is a cyclic number.

It is not a de Polignac number, because 125408065 - 2³ = 125408057 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47767 + ... + 50323.

It is an arithmetic number, because the mean of its divisors is an integer number (9980037).

Almost surely, 2^125408065 is an apocalyptic number.

It is an amenable number.

125408065 is a deficient number, since it is larger than the sum of its proper divisors (34272527).

125408065 is a wasteful number, since it uses less digits than its factorization.

125408065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3156.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 125408065 is about 11198.5742396075. The cubic root of 125408065 is about 500.5434956775.

The spelling of 125408065 in words is "one hundred twenty-five million, four hundred eight thousand, sixty-five".