20525002525 has 12 divisors (see below), whose sum is σ = 25454924352. Its totient is φ = 16417472240.

The previous prime is 20525002481. The next prime is 20525002549. The reversal of 20525002525 is 52520052502.

It is not a de Polignac number, because 20525002525 - 2⁷ = 20525002397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20525002493 and 20525002502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111762 + ... + 231388.

It is an arithmetic number, because the mean of its divisors is an integer number (2121243696).

Almost surely, 2^20525002525 is an apocalyptic number.

20525002525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20525002525 is a deficient number, since it is larger than the sum of its proper divisors (4929921827).

20525002525 is a wasteful number, since it uses less digits than its factorization.

20525002525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126500 (or 126495 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 28.

The spelling of 20525002525 in words is "twenty billion, five hundred twenty-five million, two thousand, five hundred twenty-five".