125349997 has 4 divisors (see below), whose sum is σ = 128407356. Its totient is φ = 122292640.

The previous prime is 125349967. The next prime is 125350037. The reversal of 125349997 is 799943521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 799943521 = 13 ⋅61534117.

It can be written as a sum of positive squares in 2 ways, for example, as 17065161 + 108284836 = 4131^2 + 10406^2 .

It is a cyclic number.

It is not a de Polignac number, because 125349997 - 2¹⁵ = 125317229 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125349997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125349907) 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, 1528618 + ... + 1528699.

It is an arithmetic number, because the mean of its divisors is an integer number (32101839).

Almost surely, 2^125349997 is an apocalyptic number.

It is an amenable number.

125349997 is a deficient number, since it is larger than the sum of its proper divisors (3057359).

125349997 is an equidigital number, since it uses as much as digits as its factorization.

125349997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3057358.

The product of its digits is 612360, while the sum is 49.

The square root of 125349997 is about 11195.9812879443. The cubic root of 125349997 is about 500.4662277948.

The spelling of 125349997 in words is "one hundred twenty-five million, three hundred forty-nine thousand, nine hundred ninety-seven".