1525568 has 42 divisors (see below), whose sum is σ = 3344418. Its totient is φ = 689920.

The previous prime is 1525561. The next prime is 1525571. The reversal of 1525568 is 8655251.

It can be written as a sum of positive squares in only one way, i.e., 1517824 + 7744 = 1232^2 + 88^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1525561) 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, 7646 + ... + 7842.

It is an arithmetic number, because the mean of its divisors is an integer number (79629).

2^1525568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1525568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1672209).

1525568 is an abundant number, since it is smaller than the sum of its proper divisors (1818850).

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

1525568 is a wasteful number, since it uses less digits than its factorization.

1525568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 210 counting only the distinct ones).

The product of its digits is 12000, while the sum is 32.

The square root of 1525568 is about 1235.1388585904. The cubic root of 1525568 is about 115.1181646165.

1525568 divided by its sum of digits (32) gives a palindrome (47674).

The spelling of 1525568 in words is "one million, five hundred twenty-five thousand, five hundred sixty-eight".