125969621 has 8 divisors (see below), whose sum is σ = 127915200. Its totient is φ = 124036000.

The previous prime is 125969611. The next prime is 125969629. The reversal of 125969621 is 126969521.

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 125969621 - 2¹⁰ = 125968597 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 (125969629) 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, 19520 + ... + 25158.

It is an arithmetic number, because the mean of its divisors is an integer number (15989400).

Almost surely, 2^125969621 is an apocalyptic number.

It is an amenable number.

125969621 is a deficient number, since it is larger than the sum of its proper divisors (1945579).

125969621 is an equidigital number, since it uses as much as digits as its factorization.

125969621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5979.

The product of its digits is 58320, while the sum is 41.

The square root of 125969621 is about 11223.6188905362. The cubic root of 125969621 is about 501.2894995230.

The spelling of 125969621 in words is "one hundred twenty-five million, nine hundred sixty-nine thousand, six hundred twenty-one".