65525524919 has 4 divisors (see below), whose sum is σ = 65681910840. Its totient is φ = 65369139000.

The previous prime is 65525524901. The next prime is 65525524943. The reversal of 65525524919 is 91942552556.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65525524919 - 2⁸ = 65525524663 is a prime.

It is a super-2 number, since 2×65525524919² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65525523919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78192332 + ... + 78193169.

It is an arithmetic number, because the mean of its divisors is an integer number (16420477710).

Almost surely, 2^65525524919 is an apocalyptic number.

65525524919 is a deficient number, since it is larger than the sum of its proper divisors (156385921).

65525524919 is a wasteful number, since it uses less digits than its factorization.

65525524919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156385920.

The product of its digits is 4860000, while the sum is 53.

The spelling of 65525524919 in words is "sixty-five billion, five hundred twenty-five million, five hundred twenty-four thousand, nine hundred nineteen".