125756249 has 4 divisors (see below), whose sum is σ = 131223936. Its totient is φ = 120288564.

The previous prime is 125756237. The next prime is 125756251. The reversal of 125756249 is 942657521.

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.

It is a cyclic number.

It is not a de Polignac number, because 125756249 - 2⁴ = 125756233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125756299) 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, 2733809 + ... + 2733854.

It is an arithmetic number, because the mean of its divisors is an integer number (32805984).

Almost surely, 2^125756249 is an apocalyptic number.

It is an amenable number.

125756249 is a deficient number, since it is larger than the sum of its proper divisors (5467687).

125756249 is an equidigital number, since it uses as much as digits as its factorization.

125756249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5467686.

The product of its digits is 151200, while the sum is 41.

The square root of 125756249 is about 11214.1093716799. The cubic root of 125756249 is about 501.0063053404.

The spelling of 125756249 in words is "one hundred twenty-five million, seven hundred fifty-six thousand, two hundred forty-nine".