2001525 has 12 divisors (see below), whose sum is σ = 3309312. Its totient is φ = 1067440.

The previous prime is 2001511. The next prime is 2001533. The reversal of 2001525 is 5251002.

It is not a de Polignac number, because 2001525 - 2⁴ = 2001509 is a prime.

It is a super-2 number, since 2×2001525² = 8012204651250, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13269 + ... + 13418.

It is an arithmetic number, because the mean of its divisors is an integer number (275776).

2^2001525 is an apocalyptic number.

2001525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2001525 is a deficient number, since it is larger than the sum of its proper divisors (1307787).

2001525 is a wasteful number, since it uses less digits than its factorization.

2001525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26700 (or 26695 counting only the distinct ones).

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

The square root of 2001525 is about 1414.7526285538. The cubic root of 2001525 is about 126.0241198471.

Adding to 2001525 its reverse (5251002), we get a palindrome (7252527).

It can be divided in two parts, 2001 and 525, that multiplied together give a triangular number (1050525 = T₁₄₄₉).

The spelling of 2001525 in words is "two million, one thousand, five hundred twenty-five".