1525003 has 4 divisors (see below), whose sum is σ = 1529208. Its totient is φ = 1520800.

The previous prime is 1524989. The next prime is 1525021. The reversal of 1525003 is 3005251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3005251 = 37 ⋅81223.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1525003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1525033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1501 + ... + 2302.

It is an arithmetic number, because the mean of its divisors is an integer number (382302).

2^1525003 is an apocalyptic number.

1525003 is a deficient number, since it is larger than the sum of its proper divisors (4205).

1525003 is an equidigital number, since it uses as much as digits as its factorization.

1525003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4204.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 1525003 is about 1234.9101181867. The cubic root of 1525003 is about 115.1039513761.

The spelling of 1525003 in words is "one million, five hundred twenty-five thousand, three".