125056261 has 8 divisors (see below), whose sum is σ = 136770048. Its totient is φ = 113400000.

The previous prime is 125056259. The next prime is 125056361. The reversal of 125056261 is 162650521.

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

It is a 5-Lehmer number, since φ(125056261) divides (125056261-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 125056261 - 2¹ = 125056259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125056231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9765 + ... + 18586.

It is an arithmetic number, because the mean of its divisors is an integer number (17096256).

Almost surely, 2^125056261 is an apocalyptic number.

125056261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

125056261 is a deficient number, since it is larger than the sum of its proper divisors (11713787).

125056261 is a wasteful number, since it uses less digits than its factorization.

125056261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28763.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 125056261 is about 11182.8556728592. The cubic root of 125056261 is about 500.0750034151.

The spelling of 125056261 in words is "one hundred twenty-five million, fifty-six thousand, two hundred sixty-one".