125125031 has 8 divisors (see below), whose sum is σ = 126324000. Its totient is φ = 123932160.

The previous prime is 125125027. The next prime is 125125057. The reversal of 125125031 is 130521521.

It is a happy number.

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 125125031 - 2² = 125125027 is a prime.

It is a super-2 number, since 2×125125031² = 31312546765501922, 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 = 125124994 and 125125012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125125001) 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, 46655 + ... + 49263.

It is an arithmetic number, because the mean of its divisors is an integer number (15790500).

Almost surely, 2^125125031 is an apocalyptic number.

125125031 is the 5003-rd centered decagonal number.

125125031 is a deficient number, since it is larger than the sum of its proper divisors (1198969).

125125031 is a wasteful number, since it uses less digits than its factorization.

125125031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3049.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 125125031 is about 11185.9300462679. The cubic root of 125125031 is about 500.1666524478.

Adding to 125125031 its reverse (130521521), we get a palindrome (255646552).

The spelling of 125125031 in words is "one hundred twenty-five million, one hundred twenty-five thousand, thirty-one".