125974999 has 8 divisors (see below), whose sum is σ = 127757520. Its totient is φ = 124204416.

The previous prime is 125974991. The next prime is 125975021. The reversal of 125974999 is 999479521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125974999 - 2³ = 125974991 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 (125974991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19432 + ... + 25090.

It is an arithmetic number, because the mean of its divisors is an integer number (15969690).

Almost surely, 2^125974999 is an apocalyptic number.

125974999 is a deficient number, since it is larger than the sum of its proper divisors (1782521).

125974999 is a wasteful number, since it uses less digits than its factorization.

125974999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5969.

The product of its digits is 1837080, while the sum is 55.

The square root of 125974999 is about 11223.8584720229. The cubic root of 125974999 is about 501.2966332445.

The spelling of 125974999 in words is "one hundred twenty-five million, nine hundred seventy-four thousand, nine hundred ninety-nine".