65129425 has 6 divisors (see below), whose sum is σ = 80760518. Its totient is φ = 52103520.

The previous prime is 65129381. The next prime is 65129437. The reversal of 65129425 is 52492156.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 8714304 + 56415121 = 2952^2 + 7511^2 .

It is not a de Polignac number, because 65129425 - 2⁷ = 65129297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1302564 + ... + 1302613.

Almost surely, 2^65129425 is an apocalyptic number.

It is an amenable number.

65129425 is a deficient number, since it is larger than the sum of its proper divisors (15631093).

65129425 is a wasteful number, since it uses less digits than its factorization.

65129425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2605187 (or 2605182 counting only the distinct ones).

The product of its digits is 21600, while the sum is 34.

The square root of 65129425 is about 8070.2803544858. The cubic root of 65129425 is about 402.3392617182.

The spelling of 65129425 in words is "sixty-five million, one hundred twenty-nine thousand, four hundred twenty-five".