125538001 has 4 divisors (see below), whose sum is σ = 125571904. Its totient is φ = 125504100.

The previous prime is 125537981. The next prime is 125538041. The reversal of 125538001 is 100835521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 125538001 - 2²⁵ = 91983569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125538041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10605 + ... + 19066.

It is an arithmetic number, because the mean of its divisors is an integer number (31392976).

Almost surely, 2^125538001 is an apocalyptic number.

It is an amenable number.

125538001 is a deficient number, since it is larger than the sum of its proper divisors (33903).

125538001 is an equidigital number, since it uses as much as digits as its factorization.

125538001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33902.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 125538001 is about 11204.3741904669. The cubic root of 125538001 is about 500.7163079824.

The spelling of 125538001 in words is "one hundred twenty-five million, five hundred thirty-eight thousand, one".