4001125 has 8 divisors (see below), whose sum is σ = 4993560. Its totient is φ = 3200800.

The previous prime is 4001119. The next prime is 4001141. The reversal of 4001125 is 5211004.

It can be written as a sum of positive squares in 4 ways, for example, as 1252161 + 2748964 = 1119^2 + 1658^2 .

It is not a de Polignac number, because 4001125 - 2³ = 4001117 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15880 + ... + 16129.

It is an arithmetic number, because the mean of its divisors is an integer number (624195).

Almost surely, 2^4001125 is an apocalyptic number.

It is an amenable number.

4001125 is a deficient number, since it is larger than the sum of its proper divisors (992435).

4001125 is an equidigital number, since it uses as much as digits as its factorization.

4001125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32024 (or 32014 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 4001125 is about 2000.2812302274. The cubic root of 4001125 is about 158.7549856867.

Adding to 4001125 its reverse (5211004), we get a palindrome (9212129).

The spelling of 4001125 in words is "four million, one thousand, one hundred twenty-five".