85625405428 has 6 divisors (see below), whose sum is σ = 149844459506. Its totient is φ = 42812702712.

The previous prime is 85625405357. The next prime is 85625405441. The reversal of 85625405428 is 82450452658.

It can be written as a sum of positive squares in only one way, i.e., 80322361744 + 5303043684 = 283412^2 + 72822^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10703175675 + ... + 10703175682.

Almost surely, 2^85625405428 is an apocalyptic number.

It is an amenable number.

85625405428 is a deficient number, since it is larger than the sum of its proper divisors (64219054078).

85625405428 is a wasteful number, since it uses less digits than its factorization.

85625405428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21406351361 (or 21406351359 counting only the distinct ones).

The product of its (nonzero) digits is 3072000, while the sum is 49.

The spelling of 85625405428 in words is "eighty-five billion, six hundred twenty-five million, four hundred five thousand, four hundred twenty-eight".