25000505025 has 24 divisors (see below), whose sum is σ = 42451312704. Its totient is φ = 12973233600.

The previous prime is 25000505021. The next prime is 25000505027. The reversal of 25000505025 is 52050500052.

It is not a de Polignac number, because 25000505025 - 2² = 25000505021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25000504986 and 25000505004.

It is not an unprimeable number, because it can be changed into a prime (25000505021) 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 23 ways as a sum of consecutive naturals, for example, 4501821 + ... + 4507370.

It is an arithmetic number, because the mean of its divisors is an integer number (1768804696).

Almost surely, 2^25000505025 is an apocalyptic number.

25000505025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25000505025 is a deficient number, since it is larger than the sum of its proper divisors (17450807679).

25000505025 is a wasteful number, since it uses less digits than its factorization.

25000505025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9009241 (or 9009236 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 24.

The spelling of 25000505025 in words is "twenty-five billion, five hundred five thousand, twenty-five".