125474661 has 12 divisors (see below), whose sum is σ = 195182988. Its totient is φ = 77215104.

The previous prime is 125474653. The next prime is 125474681. The reversal of 125474661 is 166474521.

125474661 is a `hidden beast` number, since 12 + 547 + 46 + 61 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 35034561 + 90440100 = 5919^2 + 9510^2 .

It is not a de Polignac number, because 125474661 - 2³ = 125474653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125474611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 536100 + ... + 536333.

It is an arithmetic number, because the mean of its divisors is an integer number (16265249).

Almost surely, 2^125474661 is an apocalyptic number.

It is an amenable number.

125474661 is a deficient number, since it is larger than the sum of its proper divisors (69708327).

125474661 is a wasteful number, since it uses less digits than its factorization.

125474661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072452 (or 1072449 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 125474661 is about 11201.5472591959. The cubic root of 125474661 is about 500.6320819415.

The spelling of 125474661 in words is "one hundred twenty-five million, four hundred seventy-four thousand, six hundred sixty-one".