65252405 has 8 divisors (see below), whose sum is σ = 78646200. Its totient is φ = 51973056.

The previous prime is 65252399. The next prime is 65252413. The reversal of 65252405 is 50425256.

It can be written as a sum of positive squares in 4 ways, for example, as 33431524 + 31820881 = 5782^2 + 5641^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65252405 - 2⁴ = 65252389 is a prime.

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, 27350 + ... + 29639.

It is an arithmetic number, because the mean of its divisors is an integer number (9830775).

Almost surely, 2^65252405 is an apocalyptic number.

It is an amenable number.

65252405 is a deficient number, since it is larger than the sum of its proper divisors (13393795).

65252405 is a wasteful number, since it uses less digits than its factorization.

65252405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57223.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 65252405 is about 8077.8960750928. The cubic root of 65252405 is about 402.5923402198.

The spelling of 65252405 in words is "sixty-five million, two hundred fifty-two thousand, four hundred five".