2131525 has 24 divisors (see below), whose sum is σ = 3017664. Its totient is φ = 1478400.

The previous prime is 2131517. The next prime is 2131531. The reversal of 2131525 is 5251312.

It is not a de Polignac number, because 2131525 - 2³ = 2131517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6157 + ... + 6493.

It is an arithmetic number, because the mean of its divisors is an integer number (125736).

2^2131525 is an apocalyptic number.

2131525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2131525 is a deficient number, since it is larger than the sum of its proper divisors (886139).

2131525 is a wasteful number, since it uses less digits than its factorization.

2131525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381 (or 376 counting only the distinct ones).

The product of its digits is 300, while the sum is 19.

The square root of 2131525 is about 1459.9743148426. The cubic root of 2131525 is about 128.6955341936.

Adding to 2131525 its reverse (5251312), we get a palindrome (7382837).

The spelling of 2131525 in words is "two million, one hundred thirty-one thousand, five hundred twenty-five".