125431117 has 8 divisors (see below), whose sum is σ = 151782336. Its totient is φ = 101188032.

The previous prime is 125431079. The next prime is 125431127. The reversal of 125431117 is 711134521.

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 125431117 - 2¹⁹ = 124906829 is a prime.

It is a super-2 number, since 2×125431117² = 31465930223735378, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125431091 and 125431100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125431127) 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, 526903 + ... + 527140.

It is an arithmetic number, because the mean of its divisors is an integer number (18972792).

Almost surely, 2^125431117 is an apocalyptic number.

125431117 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

125431117 is a deficient number, since it is larger than the sum of its proper divisors (26351219).

125431117 is a wasteful number, since it uses less digits than its factorization.

125431117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054067.

The product of its digits is 840, while the sum is 25.

The square root of 125431117 is about 11199.6034304791. The cubic root of 125431117 is about 500.5741630878.

Adding to 125431117 its reverse (711134521), we get a palindrome (836565638).

The spelling of 125431117 in words is "one hundred twenty-five million, four hundred thirty-one thousand, one hundred seventeen".