125406663 has 4 divisors (see below), whose sum is σ = 167208888. Its totient is φ = 83604440.

The previous prime is 125406641. The next prime is 125406679. The reversal of 125406663 is 366604521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125406663 - 2⁶ = 125406599 is a prime.

It is a super-2 number, since 2×125406663² = 31453662249591138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125406613) 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 3 ways as a sum of consecutive naturals, for example, 20901108 + ... + 20901113.

It is an arithmetic number, because the mean of its divisors is an integer number (41802222).

Almost surely, 2^125406663 is an apocalyptic number.

125406663 is a deficient number, since it is larger than the sum of its proper divisors (41802225).

125406663 is an equidigital number, since it uses as much as digits as its factorization.

125406663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41802224.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 125406663 is about 11198.5116421782. The cubic root of 125406663 is about 500.5416303945.

The spelling of 125406663 in words is "one hundred twenty-five million, four hundred six thousand, six hundred sixty-three".