125047381 has 4 divisors (see below), whose sum is σ = 125079552. Its totient is φ = 125015212.

The previous prime is 125047357. The next prime is 125047387. The reversal of 125047381 is 183740521.

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-125047381 is a prime.

It is a super-2 number, since 2×125047381² = 31273694989918322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125047387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9301 + ... + 18346.

It is an arithmetic number, because the mean of its divisors is an integer number (31269888).

Almost surely, 2^125047381 is an apocalyptic number.

It is an amenable number.

125047381 is a deficient number, since it is larger than the sum of its proper divisors (32171).

125047381 is an equidigital number, since it uses as much as digits as its factorization.

125047381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32170.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 125047381 is about 11182.4586294786. The cubic root of 125047381 is about 500.0631666863.

The spelling of 125047381 in words is "one hundred twenty-five million, forty-seven thousand, three hundred eighty-one".