65625243601 has 4 divisors (see below), whose sum is σ = 65678642100. Its totient is φ = 65571845104.

The previous prime is 65625243589. The next prime is 65625243631. The reversal of 65625243601 is 10634252656.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 53661259201 + 11963984400 = 231649^2 + 109380^2 .

It is a cyclic number.

It is not a de Polignac number, because 65625243601 - 2¹³ = 65625235409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65625243631) 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, 26697406 + ... + 26699863.

It is an arithmetic number, because the mean of its divisors is an integer number (16419660525).

Almost surely, 2^65625243601 is an apocalyptic number.

It is an amenable number.

65625243601 is a deficient number, since it is larger than the sum of its proper divisors (53398499).

65625243601 is a wasteful number, since it uses less digits than its factorization.

65625243601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53398498.

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 65625243601 in words is "sixty-five billion, six hundred twenty-five million, two hundred forty-three thousand, six hundred one".