7125381 has 16 divisors (see below), whose sum is σ = 10897920. Its totient is φ = 4596480.

The previous prime is 7125379. The next prime is 7125407. The reversal of 7125381 is 1835217.

It is not a de Polignac number, because 7125381 - 2¹ = 7125379 is a prime.

It is a super-2 number, since 2×7125381² = 101542108790322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7125281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3420 + ... + 5093.

It is an arithmetic number, because the mean of its divisors is an integer number (681120).

Almost surely, 2^7125381 is an apocalyptic number.

It is an amenable number.

7125381 is a deficient number, since it is larger than the sum of its proper divisors (3772539).

7125381 is a wasteful number, since it uses less digits than its factorization.

7125381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8553 (or 8547 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 7125381 is about 2669.3409298926. The cubic root of 7125381 is about 192.4284863949.

It can be divided in two parts, 71 and 25381, that added together give a palindrome (25452).

The spelling of 7125381 in words is "seven million, one hundred twenty-five thousand, three hundred eighty-one".