65129825 has 12 divisors (see below), whose sum is σ = 80874288. Its totient is φ = 52030800.

The previous prime is 65129819. The next prime is 65129843. The reversal of 65129825 is 52892156.

It is not a de Polignac number, because 65129825 - 2⁴ = 65129809 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22934 + ... + 25616.

It is an arithmetic number, because the mean of its divisors is an integer number (6739524).

Almost surely, 2^65129825 is an apocalyptic number.

It is an amenable number.

65129825 is a deficient number, since it is larger than the sum of its proper divisors (15744463).

65129825 is a wasteful number, since it uses less digits than its factorization.

65129825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3664 (or 3659 counting only the distinct ones).

The product of its digits is 43200, while the sum is 38.

The square root of 65129825 is about 8070.3051367343. The cubic root of 65129825 is about 402.3400853878.

The spelling of 65129825 in words is "sixty-five million, one hundred twenty-nine thousand, eight hundred twenty-five".