65817493025 has 12 divisors (see below), whose sum is σ = 84427957500. Its totient is φ = 50838338880.

The previous prime is 65817493003. The next prime is 65817493067. The reversal of 65817493025 is 52039471856.

It is a happy number.

65817493025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 1703708176 + 64113784849 = 41276^2 + 253207^2 .

It is not a de Polignac number, because 65817493025 - 2¹⁸ = 65817230881 is a prime.

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, 45390650 + ... + 45392099.

It is an arithmetic number, because the mean of its divisors is an integer number (7035663125).

It is a 1-persistent number, because it is pandigital, but 2⋅65817493025 = 131634986050 is not.

Almost surely, 2^65817493025 is an apocalyptic number.

It is an amenable number.

65817493025 is a deficient number, since it is larger than the sum of its proper divisors (18610464475).

65817493025 is a wasteful number, since it uses less digits than its factorization.

65817493025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90782788 (or 90782783 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 50.

The spelling of 65817493025 in words is "sixty-five billion, eight hundred seventeen million, four hundred ninety-three thousand, twenty-five".