25525530050525 has 12 divisors (see below), whose sum is σ = 31651739799252. Its totient is φ = 20420370791040.

The previous prime is 25525530050519. The next prime is 25525530050599. The reversal of 25525530050525 is 52505003552552.

It can be written as a sum of positive squares in 6 ways, for example, as 2184679100356 + 23340850950169 = 1478066^2 + 4831237^2 .

It is not a de Polignac number, because 25525530050525 - 2²² = 25525525856221 is a prime.

It is a Duffinian number.

It is a Curzon number.

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, 10514459 + ... + 12712391.

It is an arithmetic number, because the mean of its divisors is an integer number (2637644983271).

Almost surely, 2^{25525530050525} is an apocalyptic number.

25525530050525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25525530050525 is a deficient number, since it is larger than the sum of its proper divisors (6126209748727).

25525530050525 is a wasteful number, since it uses less digits than its factorization.

25525530050525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2662480 (or 2662475 counting only the distinct ones).

The product of its (nonzero) digits is 1875000, while the sum is 44.

The spelling of 25525530050525 in words is "twenty-five trillion, five hundred twenty-five billion, five hundred thirty million, fifty thousand, five hundred twenty-five".