125406687 has 16 divisors (see below), whose sum is σ = 197261312. Its totient is φ = 69348960.

The previous prime is 125406679. The next prime is 125406689. The reversal of 125406687 is 786604521.

It is not a de Polignac number, because 125406687 - 2³ = 125406679 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 (125406689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95668 + ... + 96969.

It is an arithmetic number, because the mean of its divisors is an integer number (12328832).

Almost surely, 2^125406687 is an apocalyptic number.

125406687 is a deficient number, since it is larger than the sum of its proper divisors (71854625).

125406687 is a wasteful number, since it uses less digits than its factorization.

125406687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192678.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 125406687 is about 11198.5127137491. The cubic root of 125406687 is about 500.5416623253.

The spelling of 125406687 in words is "one hundred twenty-five million, four hundred six thousand, six hundred eighty-seven".