125734513 has 4 divisors (see below), whose sum is σ = 125816320. Its totient is φ = 125652708.

The previous prime is 125734463. The next prime is 125734561. The reversal of 125734513 is 315437521.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-125734513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125734013) 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 3 ways as a sum of consecutive naturals, for example, 38553 + ... + 41686.

It is an arithmetic number, because the mean of its divisors is an integer number (31454080).

Almost surely, 2^125734513 is an apocalyptic number.

It is an amenable number.

125734513 is a deficient number, since it is larger than the sum of its proper divisors (81807).

125734513 is an equidigital number, since it uses as much as digits as its factorization.

125734513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81806.

The product of its digits is 12600, while the sum is 31.

The square root of 125734513 is about 11213.1401935408. The cubic root of 125734513 is about 500.9774386489.

The spelling of 125734513 in words is "one hundred twenty-five million, seven hundred thirty-four thousand, five hundred thirteen".