125699669 has 8 divisors (see below), whose sum is σ = 131594112. Its totient is φ = 119841040.

The previous prime is 125699657. The next prime is 125699671. The reversal of 125699669 is 966996521.

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

It is not a de Polignac number, because 125699669 - 2⁴ = 125699653 is a prime.

It is a super-2 number, since 2×125699669² = 31600813573419122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125699669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125699069) 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, 1634 + ... + 15939.

It is an arithmetic number, because the mean of its divisors is an integer number (16449264).

Almost surely, 2^125699669 is an apocalyptic number.

It is an amenable number.

125699669 is a deficient number, since it is larger than the sum of its proper divisors (5894443).

125699669 is a wasteful number, since it uses less digits than its factorization.

125699669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17907.

The product of its digits is 1574640, while the sum is 53.

The square root of 125699669 is about 11211.5863730339. The cubic root of 125699669 is about 500.9311568175.

The spelling of 125699669 in words is "one hundred twenty-five million, six hundred ninety-nine thousand, six hundred sixty-nine".