125417121409 has 8 divisors (see below), whose sum is σ = 126802166400. Its totient is φ = 124039624896.

The previous prime is 125417121397. The next prime is 125417121433. The reversal of 125417121409 is 904121714521.

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 125417121409 - 2⁷ = 125417121281 is a prime.

It is a super-2 number, since 2×125417121409² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125417121469) 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, 1853704 + ... + 1920169.

It is an arithmetic number, because the mean of its divisors is an integer number (15850270800).

Almost surely, 2^125417121409 is an apocalyptic number.

It is an amenable number.

125417121409 is a deficient number, since it is larger than the sum of its proper divisors (1385044991).

125417121409 is a wasteful number, since it uses less digits than its factorization.

125417121409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3774239.

The product of its (nonzero) digits is 20160, while the sum is 37.

The spelling of 125417121409 in words is "one hundred twenty-five billion, four hundred seventeen million, one hundred twenty-one thousand, four hundred nine".