125667605 has 12 divisors (see below), whose sum is σ = 175422060. Its totient is φ = 86171904.

The previous prime is 125667601. The next prime is 125667697. The reversal of 125667605 is 506766521.

It can be written as a sum of positive squares in 2 ways, for example, as 48121969 + 77545636 = 6937^2 + 8806^2 .

It is not a de Polignac number, because 125667605 - 2² = 125667601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125667601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 256220 + ... + 256709.

It is an arithmetic number, because the mean of its divisors is an integer number (14618505).

Almost surely, 2^125667605 is an apocalyptic number.

It is an amenable number.

125667605 is a deficient number, since it is larger than the sum of its proper divisors (49754455).

125667605 is an equidigital number, since it uses as much as digits as its factorization.

125667605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512948 (or 512941 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 125667605 is about 11210.1563325406. The cubic root of 125667605 is about 500.8885599869. Note that the first 3 decimals are identical.

The spelling of 125667605 in words is "one hundred twenty-five million, six hundred sixty-seven thousand, six hundred five".