125705722 has 4 divisors (see below), whose sum is σ = 188558586. Its totient is φ = 62852860.

The previous prime is 125705719. The next prime is 125705747. The reversal of 125705722 is 227507521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 227507521 = 6113 ⋅37217.

It can be written as a sum of positive squares in only one way, i.e., 83338641 + 42367081 = 9129^2 + 6509^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31426429 + ... + 31426432.

Almost surely, 2^125705722 is an apocalyptic number.

125705722 is a deficient number, since it is larger than the sum of its proper divisors (62852864).

125705722 is an equidigital number, since it uses as much as digits as its factorization.

125705722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62852863.

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 125705722 is about 11211.8563137422. The cubic root of 125705722 is about 500.9391973786.

The spelling of 125705722 in words is "one hundred twenty-five million, seven hundred five thousand, seven hundred twenty-two".