85997525945 has 8 divisors (see below), whose sum is σ = 103580664840. Its totient is φ = 68542264960.

The previous prime is 85997525917. The next prime is 85997525947. The reversal of 85997525945 is 54952579958.

It can be written as a sum of positive squares in 4 ways, for example, as 3136441 + 85994389504 = 1771^2 + 293248^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85997525945 - 2⁸ = 85997525689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85997525947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31967996 + ... + 31970685.

It is an arithmetic number, because the mean of its divisors is an integer number (12947583105).

Almost surely, 2^85997525945 is an apocalyptic number.

It is an amenable number.

85997525945 is a deficient number, since it is larger than the sum of its proper divisors (17583138895).

85997525945 is a wasteful number, since it uses less digits than its factorization.

85997525945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63938955.

The product of its digits is 204120000, while the sum is 68.

The spelling of 85997525945 in words is "eighty-five billion, nine hundred ninety-seven million, five hundred twenty-five thousand, nine hundred forty-five".