425251155638 has 8 divisors (see below), whose sum is σ = 637976467632. Its totient is φ = 212592333096.

The previous prime is 425251155601. The next prime is 425251155653. The reversal of 425251155638 is 836551152524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 425251155592 and 425251155601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16606370 + ... + 16631957.

It is an arithmetic number, because the mean of its divisors is an integer number (79747058454).

Almost surely, 2^425251155638 is an apocalyptic number.

425251155638 is a deficient number, since it is larger than the sum of its proper divisors (212725311994).

425251155638 is a wasteful number, since it uses less digits than its factorization.

425251155638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33244726.

The product of its digits is 1440000, while the sum is 47.

The spelling of 425251155638 in words is "four hundred twenty-five billion, two hundred fifty-one million, one hundred fifty-five thousand, six hundred thirty-eight".