125298181 has 8 divisors (see below), whose sum is σ = 131217984. Its totient is φ = 119417760.

The previous prime is 125298163. The next prime is 125298223. The reversal of 125298181 is 181892521.

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 125298181 - 2⁷ = 125298053 is a prime.

It is a super-2 number, since 2×125298181² = 31399268323817522, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125298181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125298281) 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, 3231 + ... + 16156.

It is an arithmetic number, because the mean of its divisors is an integer number (16402248).

Almost surely, 2^125298181 is an apocalyptic number.

125298181 is the 6463-rd octagonal number.

It is an amenable number.

125298181 is a deficient number, since it is larger than the sum of its proper divisors (5919803).

125298181 is a wasteful number, since it uses less digits than its factorization.

125298181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19691.

The product of its digits is 11520, while the sum is 37.

The square root of 125298181 is about 11193.6670041591. The cubic root of 125298181 is about 500.3972589537.

The spelling of 125298181 in words is "one hundred twenty-five million, two hundred ninety-eight thousand, one hundred eighty-one".