125404605 has 40 divisors (see below), whose sum is σ = 225640800. Its totient is φ = 66632544.

The previous prime is 125404589. The next prime is 125404621. The reversal of 125404605 is 506404521.

125404605 is a `hidden beast` number, since 1 + 2 + 54 + 0 + 4 + 605 = 666.

It is an interprime number because it is at equal distance from previous prime (125404589) and next prime (125404621).

It is not a de Polignac number, because 125404605 - 2⁴ = 125404589 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 169326 + ... + 170064.

It is an arithmetic number, because the mean of its divisors is an integer number (5641020).

Almost surely, 2^125404605 is an apocalyptic number.

125404605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125404605 is a deficient number, since it is larger than the sum of its proper divisors (100236195).

125404605 is an equidigital number, since it uses as much as digits as its factorization.

125404605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175 (or 1166 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 125404605 is about 11198.4197545904. The cubic root of 125404605 is about 500.5388923148.

The spelling of 125404605 in words is "one hundred twenty-five million, four hundred four thousand, six hundred five".