125197399 has 8 divisors (see below), whose sum is σ = 126316800. Its totient is φ = 124082016.

The previous prime is 125197361. The next prime is 125197421. The reversal of 125197399 is 993791521.

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 125197399 - 2¹⁹ = 124673111 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 (125197199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114634 + ... + 115720.

It is an arithmetic number, because the mean of its divisors is an integer number (15789600).

Almost surely, 2^125197399 is an apocalyptic number.

125197399 is a deficient number, since it is larger than the sum of its proper divisors (1119401).

125197399 is a wasteful number, since it uses less digits than its factorization.

125197399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2009.

The product of its digits is 153090, while the sum is 46.

The square root of 125197399 is about 11189.1643566443. The cubic root of 125197399 is about 500.2630602410.

The spelling of 125197399 in words is "one hundred twenty-five million, one hundred ninety-seven thousand, three hundred ninety-nine".