125371381 has 4 divisors (see below), whose sum is σ = 125519212. Its totient is φ = 125223552.

The previous prime is 125371349. The next prime is 125371397. The reversal of 125371381 is 183173521.

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 43758225 + 81613156 = 6615^2 + 9034^2 .

It is a cyclic number.

It is not a de Polignac number, because 125371381 - 2⁵ = 125371349 is a prime.

It is a super-2 number, since 2×125371381² = 31435966347694322, 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 (125371681) 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, 72636 + ... + 74341.

It is an arithmetic number, because the mean of its divisors is an integer number (31379803).

Almost surely, 2^125371381 is an apocalyptic number.

It is an amenable number.

125371381 is a deficient number, since it is larger than the sum of its proper divisors (147831).

125371381 is an equidigital number, since it uses as much as digits as its factorization.

125371381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147830.

The product of its digits is 5040, while the sum is 31.

The square root of 125371381 is about 11196.9362327380. The cubic root of 125371381 is about 500.4946850786.

The spelling of 125371381 in words is "one hundred twenty-five million, three hundred seventy-one thousand, three hundred eighty-one".