125408381 has 8 divisors (see below), whose sum is σ = 146819904. Its totient is φ = 104870880.

The previous prime is 125408377. The next prime is 125408401. The reversal of 125408381 is 183804521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125408381 - 2² = 125408377 is a prime.

It is a super-2 number, since 2×125408381² = 31454524050082322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125408321) 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 7 ways as a sum of consecutive naturals, for example, 218195 + ... + 218768.

It is an arithmetic number, because the mean of its divisors is an integer number (18352488).

Almost surely, 2^125408381 is an apocalyptic number.

It is an amenable number.

125408381 is a deficient number, since it is larger than the sum of its proper divisors (21411523).

125408381 is an equidigital number, since it uses as much as digits as its factorization.

125408381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437011.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 125408381 is about 11198.5883485375. The cubic root of 125408381 is about 500.5439160960.

The spelling of 125408381 in words is "one hundred twenty-five million, four hundred eight thousand, three hundred eighty-one".