85438108425 has 24 divisors (see below), whose sum is σ = 141338470624. Its totient is φ = 45540927360.

The previous prime is 85438108387. The next prime is 85438108433. The reversal of 85438108425 is 52480183458.

It is not a de Polignac number, because 85438108425 - 2⁷ = 85438108297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 193447 + ... + 456396.

Almost surely, 2^85438108425 is an apocalyptic number.

It is an amenable number.

85438108425 is a deficient number, since it is larger than the sum of its proper divisors (55900362199).

85438108425 is a wasteful number, since it uses less digits than its factorization.

85438108425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651609 (or 651604 counting only the distinct ones).

The product of its (nonzero) digits is 1228800, while the sum is 48.

The spelling of 85438108425 in words is "eighty-five billion, four hundred thirty-eight million, one hundred eight thousand, four hundred twenty-five".