125713217 has 4 divisors (see below), whose sum is σ = 143672256. Its totient is φ = 107754180.

The previous prime is 125713207. The next prime is 125713219. The reversal of 125713217 is 712317521.

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: 712317521 = 23 ⋅30970327.

It is a cyclic number.

It is not a de Polignac number, because 125713217 - 2¹⁴ = 125696833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125713217.

It is not an unprimeable number, because it can be changed into a prime (125713219) 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, 8979509 + ... + 8979522.

It is an arithmetic number, because the mean of its divisors is an integer number (35918064).

Almost surely, 2^125713217 is an apocalyptic number.

It is an amenable number.

125713217 is a deficient number, since it is larger than the sum of its proper divisors (17959039).

125713217 is an equidigital number, since it uses as much as digits as its factorization.

125713217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17959038.

The product of its digits is 2940, while the sum is 29.

The square root of 125713217 is about 11212.1905531435. The cubic root of 125713217 is about 500.9491530768.

The spelling of 125713217 in words is "one hundred twenty-five million, seven hundred thirteen thousand, two hundred seventeen".