38617042725 has 72 divisors (see below), whose sum is σ = 70451969952. Its totient is φ = 20216476800.

The previous prime is 38617042721. The next prime is 38617042741. The reversal of 38617042725 is 52724071683.

38617042725 is a `hidden beast` number, since 3 + 8 + 617 + 0 + 4 + 2 + 7 + 25 = 666.

It is not a de Polignac number, because 38617042725 - 2² = 38617042721 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38617042721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2925390 + ... + 2938560.

Almost surely, 2^38617042725 is an apocalyptic number.

It is an amenable number.

38617042725 is a deficient number, since it is larger than the sum of its proper divisors (31834927227).

38617042725 is a wasteful number, since it uses less digits than its factorization.

38617042725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13427 (or 13419 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The spelling of 38617042725 in words is "thirty-eight billion, six hundred seventeen million, forty-two thousand, seven hundred twenty-five".