1520025 has 24 divisors (see below), whose sum is σ = 2708160. Its totient is φ = 747840.

The previous prime is 1520011. The next prime is 1520069. The reversal of 1520025 is 5200251.

It is not a de Polignac number, because 1520025 - 2⁴ = 1520009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 1519986 and 1520013.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 196 + ... + 1754.

It is an arithmetic number, because the mean of its divisors is an integer number (112840).

2^1520025 is an apocalyptic number.

1520025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1520025 is a deficient number, since it is larger than the sum of its proper divisors (1188135).

1520025 is a wasteful number, since it uses less digits than its factorization.

1520025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585 (or 1580 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 1520025 is about 1232.8929393909. The cubic root of 1520025 is about 114.9785719370.

Adding to 1520025 its reverse (5200251), we get a palindrome (6720276).

It can be divided in two parts, 15200 and 25, that added together give a triangular number (15225 = T₁₇₄).

The spelling of 1520025 in words is "one million, five hundred twenty thousand, twenty-five".