125197447 has 4 divisors (see below), whose sum is σ = 125422776. Its totient is φ = 124972120.

The previous prime is 125197421. The next prime is 125197459. The reversal of 125197447 is 744791521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 744791521 = 421 ⋅1769101.

It is a cyclic number.

It is not a de Polignac number, because 125197447 - 2¹⁵ = 125164679 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125192447) 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, 111829 + ... + 112942.

It is an arithmetic number, because the mean of its divisors is an integer number (31355694).

Almost surely, 2^125197447 is an apocalyptic number.

125197447 is a deficient number, since it is larger than the sum of its proper divisors (225329).

125197447 is an equidigital number, since it uses as much as digits as its factorization.

125197447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225328.

The product of its digits is 70560, while the sum is 40.

The square root of 125197447 is about 11189.1665015764. The cubic root of 125197447 is about 500.2631241737.

The spelling of 125197447 in words is "one hundred twenty-five million, one hundred ninety-seven thousand, four hundred forty-seven".