125276381 has 4 divisors (see below), whose sum is σ = 125392092. Its totient is φ = 125160672.

The previous prime is 125276351. The next prime is 125276387. The reversal of 125276381 is 183672521.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 94750756 + 30525625 = 9734^2 + 5525^2 .

It is a cyclic number.

It is not a de Polignac number, because 125276381 - 2¹⁰ = 125275357 is a prime.

It is a super-2 number, since 2×125276381² = 31388343272914322, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125276387) 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 3 ways as a sum of consecutive naturals, for example, 56216 + ... + 58401.

It is an arithmetic number, because the mean of its divisors is an integer number (31348023).

Almost surely, 2^125276381 is an apocalyptic number.

It is an amenable number.

125276381 is a deficient number, since it is larger than the sum of its proper divisors (115711).

125276381 is a wasteful number, since it uses less digits than its factorization.

125276381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115710.

The product of its digits is 20160, while the sum is 35.

The square root of 125276381 is about 11192.6931969031. The cubic root of 125276381 is about 500.3682367368.

The spelling of 125276381 in words is "one hundred twenty-five million, two hundred seventy-six thousand, three hundred eighty-one".