65625075426559 has 4 divisors (see below), whose sum is σ = 71590991374440. Its totient is φ = 59659159478680.

The previous prime is 65625075426497. The next prime is 65625075426569. The reversal of 65625075426559 is 95562457052656.

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 65625075426559 - 2⁷ = 65625075426431 is a prime.

It is a super-4 number, since 4×65625075426559⁴ (a number of 56 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65625075426494 and 65625075426503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65625075426569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2982957973924 + ... + 2982957973945.

It is an arithmetic number, because the mean of its divisors is an integer number (17897747843610).

Almost surely, 2^{65625075426559} is an apocalyptic number.

65625075426559 is a deficient number, since it is larger than the sum of its proper divisors (5965915947881).

65625075426559 is a wasteful number, since it uses less digits than its factorization.

65625075426559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5965915947880.

The product of its (nonzero) digits is 680400000, while the sum is 67.

The spelling of 65625075426559 in words is "sixty-five trillion, six hundred twenty-five billion, seventy-five million, four hundred twenty-six thousand, five hundred fifty-nine".