125702849 has 4 divisors (see below), whose sum is σ = 130037460. Its totient is φ = 121368240.

The previous prime is 125702827. The next prime is 125702881. The reversal of 125702849 is 948207521.

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

It can be written as a sum of positive squares in 2 ways, for example, as 92294449 + 33408400 = 9607^2 + 5780^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125702849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (125702809) 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, 2167262 + ... + 2167319.

It is an arithmetic number, because the mean of its divisors is an integer number (32509365).

Almost surely, 2^125702849 is an apocalyptic number.

It is an amenable number.

125702849 is a deficient number, since it is larger than the sum of its proper divisors (4334611).

125702849 is an equidigital number, since it uses as much as digits as its factorization.

125702849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4334610.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 125702849 is about 11211.7281897128. The cubic root of 125702849 is about 500.9353810334.

The spelling of 125702849 in words is "one hundred twenty-five million, seven hundred two thousand, eight hundred forty-nine".