2525232521 has 4 divisors (see below), whose sum is σ = 2885980032. Its totient is φ = 2164485012.

The previous prime is 2525232473. The next prime is 2525232557. The reversal of 2525232521 is 1252325252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2525232521 - 2¹⁰ = 2525231497 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2525237521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180373745 + ... + 180373758.

It is an arithmetic number, because the mean of its divisors is an integer number (721495008).

Almost surely, 2^2525232521 is an apocalyptic number.

It is an amenable number.

2525232521 is a deficient number, since it is larger than the sum of its proper divisors (360747511).

2525232521 is an equidigital number, since it uses as much as digits as its factorization.

2525232521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360747510.

The product of its digits is 12000, while the sum is 29.

The square root of 2525232521 is about 50251.6917227669. The cubic root of 2525232521 is about 1361.7596385766.

Adding to 2525232521 its reverse (1252325252), we get a palindrome (3777557773).

The spelling of 2525232521 in words is "two billion, five hundred twenty-five million, two hundred thirty-two thousand, five hundred twenty-one".