4181525 has 6 divisors (see below), whose sum is σ = 5185122. Its totient is φ = 3345200.

The previous prime is 4181521. The next prime is 4181531. The reversal of 4181525 is 5251814.

It can be written as a sum of positive squares in 3 ways, for example, as 579121 + 3602404 = 761^2 + 1898^2 .

It is not a de Polignac number, because 4181525 - 2² = 4181521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4181494 and 4181503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4181521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 83606 + ... + 83655.

It is an arithmetic number, because the mean of its divisors is an integer number (864187).

Almost surely, 2^4181525 is an apocalyptic number.

It is an amenable number.

4181525 is a deficient number, since it is larger than the sum of its proper divisors (1003597).

4181525 is a wasteful number, since it uses less digits than its factorization.

4181525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167271 (or 167266 counting only the distinct ones).

The product of its digits is 1600, while the sum is 26.

The square root of 4181525 is about 2044.8777469570. The cubic root of 4181525 is about 161.1059446971.

The spelling of 4181525 in words is "four million, one hundred eighty-one thousand, five hundred twenty-five".