125985123 has 12 divisors (see below), whose sum is σ = 198522168. Its totient is φ = 76354560.

The previous prime is 125985103. The next prime is 125985131. The reversal of 125985123 is 321589521.

125985123 is a `hidden beast` number, since 12 + 598 + 51 + 2 + 3 = 666.

It is not a de Polignac number, because 125985123 - 2⁶ = 125985059 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (125985103) 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, 636190 + ... + 636387.

It is an arithmetic number, because the mean of its divisors is an integer number (16543514).

Almost surely, 2^125985123 is an apocalyptic number.

125985123 is a deficient number, since it is larger than the sum of its proper divisors (72537045).

125985123 is a wasteful number, since it uses less digits than its factorization.

125985123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272594 (or 1272591 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 125985123 is about 11224.3094665106. The cubic root of 125985123 is about 501.3100618116.

The spelling of 125985123 in words is "one hundred twenty-five million, nine hundred eighty-five thousand, one hundred twenty-three".