125431201 has 4 divisors (see below), whose sum is σ = 143349952. Its totient is φ = 107512452.

The previous prime is 125431183. The next prime is 125431211. The reversal of 125431201 is 102134521.

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, and also an emirpimes, since its reverse is a distinct semiprime: 102134521 = 17 ⋅6007913.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125431201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125431211) 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, 8959365 + ... + 8959378.

It is an arithmetic number, because the mean of its divisors is an integer number (35837488).

Almost surely, 2^125431201 is an apocalyptic number.

It is an amenable number.

125431201 is a deficient number, since it is larger than the sum of its proper divisors (17918751).

125431201 is an equidigital number, since it uses as much as digits as its factorization.

125431201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17918750.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 125431201 is about 11199.6071806113. The cubic root of 125431201 is about 500.5742748310.

Adding to 125431201 its reverse (102134521), we get a palindrome (227565722).

The spelling of 125431201 in words is "one hundred twenty-five million, four hundred thirty-one thousand, two hundred one".