25365045061 has 4 divisors (see below), whose sum is σ = 25365507552. Its totient is φ = 25364582572.

The previous prime is 25365045059. The next prime is 25365045073. The reversal of 25365045061 is 16054056352.

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 25365045061 - 2¹ = 25365045059 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25365045061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25365045031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135865 + ... + 263038.

It is an arithmetic number, because the mean of its divisors is an integer number (6341376888).

Almost surely, 2^25365045061 is an apocalyptic number.

It is an amenable number.

25365045061 is a deficient number, since it is larger than the sum of its proper divisors (462491).

25365045061 is an equidigital number, since it uses as much as digits as its factorization.

25365045061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462490.

The product of its (nonzero) digits is 108000, while the sum is 37.

The spelling of 25365045061 in words is "twenty-five billion, three hundred sixty-five million, forty-five thousand, sixty-one".