3725886656638 has 8 divisors (see below), whose sum is σ = 5592077421840. Its totient is φ = 1861860849360.

The previous prime is 3725886656603. The next prime is 3725886656677. The reversal of 3725886656638 is 8366566885273.

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

It is a super-2 number, since 2×3725886656638² (a number of 26 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 3 ways as a sum of consecutive naturals, for example, 541235178 + ... + 541242061.

It is an arithmetic number, because the mean of its divisors is an integer number (699009677730).

Almost surely, 2^{3725886656638} is an apocalyptic number.

3725886656638 is a deficient number, since it is larger than the sum of its proper divisors (1866190765202).

3725886656638 is a wasteful number, since it uses less digits than its factorization.

3725886656638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082478962.

The product of its digits is 2090188800, while the sum is 73.

The spelling of 3725886656638 in words is "three trillion, seven hundred twenty-five billion, eight hundred eighty-six million, six hundred fifty-six thousand, six hundred thirty-eight".