25003656645 has 16 divisors (see below), whose sum is σ = 43642746432. Its totient is φ = 12122984960.

The previous prime is 25003656637. The next prime is 25003656649. The reversal of 25003656645 is 54665630052.

It is not a de Polignac number, because 25003656645 - 2³ = 25003656637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25003656597 and 25003656606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25003656649) 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 15 ways as a sum of consecutive naturals, for example, 75768492 + ... + 75768821.

It is an arithmetic number, because the mean of its divisors is an integer number (2727671652).

Almost surely, 2^25003656645 is an apocalyptic number.

It is an amenable number.

25003656645 is a deficient number, since it is larger than the sum of its proper divisors (18639089787).

25003656645 is a wasteful number, since it uses less digits than its factorization.

25003656645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151537332.

The product of its (nonzero) digits is 648000, while the sum is 42.

The spelling of 25003656645 in words is "twenty-five billion, three million, six hundred fifty-six thousand, six hundred forty-five".