25200560641 has 4 divisors (see below), whose sum is σ = 26013481984. Its totient is φ = 24387639300.

The previous prime is 25200560633. The next prime is 25200560647. The reversal of 25200560641 is 14606500252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25200560641 - 2³ = 25200560633 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 812921311 = 25200560641 / (2 + 5 + 2 + 0 + 0 + 5 + 6 + 0 + 6 + 4 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25200560647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 406460625 + ... + 406460686.

It is an arithmetic number, because the mean of its divisors is an integer number (6503370496).

Almost surely, 2^25200560641 is an apocalyptic number.

It is an amenable number.

25200560641 is a deficient number, since it is larger than the sum of its proper divisors (812921343).

25200560641 is an equidigital number, since it uses as much as digits as its factorization.

25200560641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812921342.

The product of its (nonzero) digits is 14400, while the sum is 31.

The spelling of 25200560641 in words is "twenty-five billion, two hundred million, five hundred sixty thousand, six hundred forty-one".