125500181 has 8 divisors (see below), whose sum is σ = 126920640. Its totient is φ = 124087392.

The previous prime is 125500159. The next prime is 125500201. The reversal of 125500181 is 181005521.

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

It is a cyclic number.

It is not a de Polignac number, because 125500181 - 2¹⁴ = 125483797 is a prime.

It is a super-2 number, since 2×125500181² = 31500590862065522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125500981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34841 + ... + 38273.

It is an arithmetic number, because the mean of its divisors is an integer number (15865080).

Almost surely, 2^125500181 is an apocalyptic number.

It is an amenable number.

125500181 is a deficient number, since it is larger than the sum of its proper divisors (1420459).

125500181 is a wasteful number, since it uses less digits than its factorization.

125500181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3835.

The product of its (nonzero) digits is 400, while the sum is 23.

The square root of 125500181 is about 11202.6863296265. The cubic root of 125500181 is about 500.6660204396. Note that the first 3 decimals are identical.

The spelling of 125500181 in words is "one hundred twenty-five million, five hundred thousand, one hundred eighty-one".