65444525 has 12 divisors (see below), whose sum is σ = 81700500. Its totient is φ = 52001280.

The previous prime is 65444507. The next prime is 65444537. The reversal of 65444525 is 52544456.

It can be written as a sum of positive squares in 6 ways, for example, as 26081449 + 39363076 = 5107^2 + 6274^2 .

It is not a de Polignac number, because 65444525 - 2¹⁰ = 65443501 is a prime.

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, 5060 + ... + 12509.

It is an arithmetic number, because the mean of its divisors is an integer number (6808375).

Almost surely, 2^65444525 is an apocalyptic number.

It is an amenable number.

65444525 is a deficient number, since it is larger than the sum of its proper divisors (16255975).

65444525 is a wasteful number, since it uses less digits than its factorization.

65444525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17728 (or 17723 counting only the distinct ones).

The product of its digits is 96000, while the sum is 35.

The square root of 65444525 is about 8089.7790451903. The cubic root of 65444525 is about 402.9870651621.

The spelling of 65444525 in words is "sixty-five million, four hundred forty-four thousand, five hundred twenty-five".