1525245 has 16 divisors (see below), whose sum is σ = 2547072. Its totient is φ = 777920.

The previous prime is 1525243. The next prime is 1525261. The reversal of 1525245 is 5425251.

It is a happy number.

It is not a de Polignac number, because 1525245 - 2¹ = 1525243 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1525243) 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, 1866 + ... + 2555.

It is an arithmetic number, because the mean of its divisors is an integer number (159192).

2^1525245 is an apocalyptic number.

1525245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1525245 is a deficient number, since it is larger than the sum of its proper divisors (1021827).

1525245 is a wasteful number, since it uses less digits than its factorization.

1525245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4452.

The product of its digits is 2000, while the sum is 24.

The square root of 1525245 is about 1235.0080971394. The cubic root of 1525245 is about 115.1100396008.

It can be divided in two parts, 1525 and 245, that added together give a triangular number (1770 = T₅₉).

The spelling of 1525245 in words is "one million, five hundred twenty-five thousand, two hundred forty-five".