65166425 has 12 divisors (see below), whose sum is σ = 82778556. Its totient is φ = 50860800.

The previous prime is 65166419. The next prime is 65166449. The reversal of 65166425 is 52466156.

It can be written as a sum of positive squares in 6 ways, for example, as 1038361 + 64128064 = 1019^2 + 8008^2 .

It is not a de Polignac number, because 65166425 - 2²⁰ = 64117849 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, 30764 + ... + 32813.

It is an arithmetic number, because the mean of its divisors is an integer number (6898213).

Almost surely, 2^65166425 is an apocalyptic number.

It is an amenable number.

65166425 is a deficient number, since it is larger than the sum of its proper divisors (17612131).

65166425 is a wasteful number, since it uses less digits than its factorization.

65166425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63628 (or 63623 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 65166425 is about 8072.5723905085. The cubic root of 65166425 is about 402.4154368857.

It can be divided in two parts, 651 and 66425, that added together give a palindrome (67076).

The spelling of 65166425 in words is "sixty-five million, one hundred sixty-six thousand, four hundred twenty-five".