38166725 has 18 divisors (see below), whose sum is σ = 49960530. Its totient is φ = 28919520.

The previous prime is 38166707. The next prime is 38166727. The reversal of 38166725 is 52766183.

It can be written as a sum of positive squares in 3 ways, for example, as 12623809 + 25542916 = 3553^2 + 5054^2 .

It is not a de Polignac number, because 38166725 - 2²⁴ = 21389509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38166727) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6911 + ... + 11139.

It is an arithmetic number, because the mean of its divisors is an integer number (2775585).

Almost surely, 2^38166725 is an apocalyptic number.

It is an amenable number.

38166725 is a deficient number, since it is larger than the sum of its proper divisors (11793805).

38166725 is a wasteful number, since it uses less digits than its factorization.

38166725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4277 (or 4253 counting only the distinct ones).

The product of its digits is 60480, while the sum is 38.

The square root of 38166725 is about 6177.9223853979. The cubic root of 38166725 is about 336.6885122358.

The spelling of 38166725 in words is "thirty-eight million, one hundred sixty-six thousand, seven hundred twenty-five".