65641525 has 12 divisors (see below), whose sum is σ = 81592992. Its totient is φ = 52385840.

The previous prime is 65641489. The next prime is 65641531. The reversal of 65641525 is 52514656.

It is not a de Polignac number, because 65641525 - 2¹⁷ = 65510453 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 11 ways as a sum of consecutive naturals, for example, 8112 + ... + 14038.

It is an arithmetic number, because the mean of its divisors is an integer number (6799416).

Almost surely, 2^65641525 is an apocalyptic number.

It is an amenable number.

65641525 is a deficient number, since it is larger than the sum of its proper divisors (15951467).

65641525 is a wasteful number, since it uses less digits than its factorization.

65641525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6380 (or 6375 counting only the distinct ones).

The product of its digits is 36000, while the sum is 34.

The square root of 65641525 is about 8101.9457539532. The cubic root of 65641525 is about 403.3910150563.

It can be divided in two parts, 65641 and 525, that added together give a palindrome (66166).

The spelling of 65641525 in words is "sixty-five million, six hundred forty-one thousand, five hundred twenty-five".