85644500425 has 12 divisors (see below), whose sum is σ = 115853651856. Its totient is φ = 62286909200.

The previous prime is 85644500423. The next prime is 85644500437. The reversal of 85644500425 is 52400544658.

It is not a de Polignac number, because 85644500425 - 2¹ = 85644500423 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85644500423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 155716999 + ... + 155717548.

It is an arithmetic number, because the mean of its divisors is an integer number (9654470988).

Almost surely, 2^85644500425 is an apocalyptic number.

It is an amenable number.

85644500425 is a deficient number, since it is larger than the sum of its proper divisors (30209151431).

85644500425 is a wasteful number, since it uses less digits than its factorization.

85644500425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311434568 (or 311434563 counting only the distinct ones).

The product of its (nonzero) digits is 768000, while the sum is 43.

The spelling of 85644500425 in words is "eighty-five billion, six hundred forty-four million, five hundred thousand, four hundred twenty-five".