1520825 has 12 divisors (see below), whose sum is σ = 1904640. Its totient is φ = 1204560.

The previous prime is 1520821. The next prime is 1520851. The reversal of 1520825 is 5280251.

It is not a de Polignac number, because 1520825 - 2² = 1520821 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1520825.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2936 + ... + 3414.

It is an arithmetic number, because the mean of its divisors is an integer number (158720).

2^1520825 is an apocalyptic number.

It is an amenable number.

1520825 is a deficient number, since it is larger than the sum of its proper divisors (383815).

1520825 is a wasteful number, since it uses less digits than its factorization.

1520825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616 (or 611 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1520825 is about 1233.2173368875. The cubic root of 1520825 is about 114.9987397467.

The spelling of 1520825 in words is "one million, five hundred twenty thousand, eight hundred twenty-five".