425378638236 has 24 divisors (see below), whose sum is σ = 1024567903744. Its totient is φ = 137218915440.

The previous prime is 425378638189. The next prime is 425378638241. The reversal of 425378638236 is 632836873524.

It is a super-2 number, since 2×425378638236² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 571745110 + ... + 571745853.

Almost surely, 2^425378638236 is an apocalyptic number.

It is an amenable number.

425378638236 is an abundant number, since it is smaller than the sum of its proper divisors (599189265508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

425378638236 is a wasteful number, since it uses less digits than its factorization.

425378638236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143491001 (or 1143490999 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 57.

The spelling of 425378638236 in words is "four hundred twenty-five billion, three hundred seventy-eight million, six hundred thirty-eight thousand, two hundred thirty-six".