25250002525 has 24 divisors (see below), whose sum is σ = 34494586848. Its totient is φ = 18181800000.

The previous prime is 25250002517. The next prime is 25250002543. The reversal of 25250002525 is 52520005252.

It is not a de Polignac number, because 25250002525 - 2³ = 25250002517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25250002493 and 25250002502.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 426771 + ... + 482320.

It is an arithmetic number, because the mean of its divisors is an integer number (1437274452).

Almost surely, 2^25250002525 is an apocalyptic number.

25250002525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25250002525 is a deficient number, since it is larger than the sum of its proper divisors (9244584323).

25250002525 is a wasteful number, since it uses less digits than its factorization.

25250002525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909213 (or 909208 counting only the distinct ones).

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

Adding to 25250002525 its reverse (52520005252), we get a palindrome (77770007777).

The spelling of 25250002525 in words is "twenty-five billion, two hundred fifty million, two thousand, five hundred twenty-five".