65909125 has 8 divisors (see below), whose sum is σ = 82254744. Its totient is φ = 52727200.

The previous prime is 65909117. The next prime is 65909143. The reversal of 65909125 is 52190956.

It can be written as a sum of positive squares in 4 ways, for example, as 9928801 + 55980324 = 3151^2 + 7482^2 .

It is not a de Polignac number, because 65909125 - 2³ = 65909117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263512 + ... + 263761.

It is an arithmetic number, because the mean of its divisors is an integer number (10281843).

Almost surely, 2^65909125 is an apocalyptic number.

It is an amenable number.

65909125 is a deficient number, since it is larger than the sum of its proper divisors (16345619).

65909125 is an equidigital number, since it uses as much as digits as its factorization.

65909125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527288 (or 527278 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 37.

The square root of 65909125 is about 8118.4435084565. The cubic root of 65909125 is about 403.9384382392.

The spelling of 65909125 in words is "sixty-five million, nine hundred nine thousand, one hundred twenty-five".