38445255640825 has 24 divisors (see below), whose sum is σ = 52031452184640. Its totient is φ = 27946472817600.

The previous prime is 38445255640787. The next prime is 38445255640829. The reversal of 38445255640825 is 52804655254483.

It is a happy number.

It is not a de Polignac number, because 38445255640825 - 2¹⁹ = 38445255116537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38445255640829) 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, 33721014 + ... + 34842463.

It is an arithmetic number, because the mean of its divisors is an integer number (2167977174360).

Almost surely, 2^{38445255640825} is an apocalyptic number.

It is an amenable number.

38445255640825 is a deficient number, since it is larger than the sum of its proper divisors (13586196543815).

38445255640825 is a wasteful number, since it uses less digits than its factorization.

38445255640825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68565537 (or 68565532 counting only the distinct ones).

The product of its (nonzero) digits is 184320000, while the sum is 61.

The spelling of 38445255640825 in words is "thirty-eight trillion, four hundred forty-five billion, two hundred fifty-five million, six hundred forty thousand, eight hundred twenty-five".