25448648773 has 16 divisors (see below), whose sum is σ = 27151122240. Its totient is φ = 23784364800.

The previous prime is 25448648767. The next prime is 25448648779. The reversal of 25448648773 is 37784684452.

It is an interprime number because it is at equal distance from previous prime (25448648767) and next prime (25448648779).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25448648773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25448648779) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 463983 + ... + 515923.

It is an arithmetic number, because the mean of its divisors is an integer number (1696945140).

Almost surely, 2^25448648773 is an apocalyptic number.

It is an amenable number.

25448648773 is a deficient number, since it is larger than the sum of its proper divisors (1702473467).

25448648773 is a wasteful number, since it uses less digits than its factorization.

25448648773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52308.

The product of its digits is 36126720, while the sum is 58.

The spelling of 25448648773 in words is "twenty-five billion, four hundred forty-eight million, six hundred forty-eight thousand, seven hundred seventy-three".