65405125 has 16 divisors (see below), whose sum is σ = 85924800. Its totient is φ = 49568400.

The previous prime is 65405117. The next prime is 65405143. The reversal of 65405125 is 52150456.

It is not a de Polignac number, because 65405125 - 2³ = 65405117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65405093 and 65405102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11395 + ... + 16144.

It is an arithmetic number, because the mean of its divisors is an integer number (5370300).

Almost surely, 2^65405125 is an apocalyptic number.

It is an amenable number.

65405125 is a deficient number, since it is larger than the sum of its proper divisors (20519675).

65405125 is a wasteful number, since it uses less digits than its factorization.

65405125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27573 (or 27563 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 65405125 is about 8087.3435069867. The cubic root of 65405125 is about 402.9061779386.

The spelling of 65405125 in words is "sixty-five million, four hundred five thousand, one hundred twenty-five".