39998375425 has 24 divisors (see below), whose sum is σ = 52963395840. Its totient is φ = 29898657600.

The previous prime is 39998375311. The next prime is 39998375429. The reversal of 39998375425 is 52457389993.

It is not a de Polignac number, because 39998375425 - 2¹¹ = 39998373377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39998375429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 867367 + ... + 912316.

It is an arithmetic number, because the mean of its divisors is an integer number (2206808160).

Almost surely, 2^39998375425 is an apocalyptic number.

It is an amenable number.

39998375425 is a deficient number, since it is larger than the sum of its proper divisors (12965020415).

39998375425 is a wasteful number, since it uses less digits than its factorization.

39998375425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779753 (or 1779748 counting only the distinct ones).

The product of its digits is 73483200, while the sum is 64.

The spelling of 39998375425 in words is "thirty-nine billion, nine hundred ninety-eight million, three hundred seventy-five thousand, four hundred twenty-five".