125705047 has 4 divisors (see below), whose sum is σ = 135374680. Its totient is φ = 116035416.

The previous prime is 125705017. The next prime is 125705059. The reversal of 125705047 is 740507521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 740507521 = 13 ⋅56962117.

It is a cyclic number.

It is not a de Polignac number, because 125705047 - 2¹¹ = 125702999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125705017) 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, 4834797 + ... + 4834822.

It is an arithmetic number, because the mean of its divisors is an integer number (33843670).

Almost surely, 2^125705047 is an apocalyptic number.

125705047 is a deficient number, since it is larger than the sum of its proper divisors (9669633).

125705047 is an equidigital number, since it uses as much as digits as its factorization.

125705047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9669632.

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

The square root of 125705047 is about 11211.8262116392. The cubic root of 125705047 is about 500.9383007486.

The spelling of 125705047 in words is "one hundred twenty-five million, seven hundred five thousand, forty-seven".