125437906 has 16 divisors (see below), whose sum is σ = 214187328. Its totient is φ = 54538000.

The previous prime is 125437891. The next prime is 125437927. The reversal of 125437906 is 609734521.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123445 + ... + 124456.

It is an arithmetic number, because the mean of its divisors is an integer number (13386708).

Almost surely, 2^125437906 is an apocalyptic number.

125437906 is a deficient number, since it is larger than the sum of its proper divisors (88749422).

125437906 is a wasteful number, since it uses less digits than its factorization.

125437906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247937.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 125437906 is about 11199.9065174670. The cubic root of 125437906 is about 500.5831941713.

It can be divided in two parts, 12543 and 7906, that added together give a square (20449 = 143²).

The spelling of 125437906 in words is "one hundred twenty-five million, four hundred thirty-seven thousand, nine hundred six".