125611081 has 4 divisors (see below), whose sum is σ = 125648512. Its totient is φ = 125573652.

The previous prime is 125611067. The next prime is 125611091. The reversal of 125611081 is 180116521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 125611081 - 2⁵ = 125611049 is a prime.

It is a super-3 number, since 3×125611081³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125611051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13125 + ... + 20578.

It is an arithmetic number, because the mean of its divisors is an integer number (31412128).

Almost surely, 2^125611081 is an apocalyptic number.

It is an amenable number.

125611081 is a deficient number, since it is larger than the sum of its proper divisors (37431).

125611081 is an equidigital number, since it uses as much as digits as its factorization.

125611081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37430.

The product of its (nonzero) digits is 480, while the sum is 25.

The square root of 125611081 is about 11207.6349423061. The cubic root of 125611081 is about 500.8134505454.

The spelling of 125611081 in words is "one hundred twenty-five million, six hundred eleven thousand, eighty-one".