4125520 has 80 divisors (see below), whose sum is σ = 11249280. Its totient is φ = 1377792.

The previous prime is 4125497. The next prime is 4125521. The reversal of 4125520 is 255214.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4125521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29611 + ... + 29749.

It is an arithmetic number, because the mean of its divisors is an integer number (140616).

Almost surely, 2^4125520 is an apocalyptic number.

4125520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4125520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5624640).

4125520 is an abundant number, since it is smaller than the sum of its proper divisors (7123760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4125520 is a wasteful number, since it uses less digits than its factorization.

4125520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212 (or 206 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 4125520 is about 2031.1376122754. The cubic root of 4125520 is about 160.3834552787.

The spelling of 4125520 in words is "four million, one hundred twenty-five thousand, five hundred twenty".