125231047 has 4 divisors (see below), whose sum is σ = 125580240. Its totient is φ = 124881856.

The previous prime is 125231009. The next prime is 125231053. The reversal of 125231047 is 740132521.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125231047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125231087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174058 + ... + 174775.

It is an arithmetic number, because the mean of its divisors is an integer number (31395060).

Almost surely, 2^125231047 is an apocalyptic number.

125231047 is a deficient number, since it is larger than the sum of its proper divisors (349193).

125231047 is an equidigital number, since it uses as much as digits as its factorization.

125231047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349192.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 125231047 is about 11190.6678531712. The cubic root of 125231047 is about 500.3078730561.

Adding to 125231047 its reverse (740132521), we get a palindrome (865363568).

The spelling of 125231047 in words is "one hundred twenty-five million, two hundred thirty-one thousand, forty-seven".