125286381 has 12 divisors (see below), whose sum is σ = 197421120. Its totient is φ = 75931080.

The previous prime is 125286367. The next prime is 125286487. The reversal of 125286381 is 183682521.

It is a happy number.

125286381 is a `hidden beast` number, since 12 + 5 + 2 + 8 + 638 + 1 = 666.

It is not a de Polignac number, because 125286381 - 2¹⁵ = 125253613 is a prime.

It is a super-3 number, since 3×125286381³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125286331) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 632661 + ... + 632858.

It is an arithmetic number, because the mean of its divisors is an integer number (16451760).

Almost surely, 2^125286381 is an apocalyptic number.

125286381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

125286381 is a deficient number, since it is larger than the sum of its proper divisors (72134739).

125286381 is a wasteful number, since it uses less digits than its factorization.

125286381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265536 (or 1265533 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 125286381 is about 11193.1399079972. The cubic root of 125286381 is about 500.3815500983.

The spelling of 125286381 in words is "one hundred twenty-five million, two hundred eighty-six thousand, three hundred eighty-one".