25948581456 has 40 divisors (see below), whose sum is σ = 76610098624. Its totient is φ = 7413880320.

The previous prime is 25948581427. The next prime is 25948581457. The reversal of 25948581456 is 65418584952.

It is a junction number, because it is equal to n+sod(n) for n = 25948581396 and 25948581405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25948581457) 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 7 ways as a sum of consecutive naturals, for example, 38613625 + ... + 38614296.

Almost surely, 2^25948581456 is an apocalyptic number.

It is an amenable number.

25948581456 is an abundant number, since it is smaller than the sum of its proper divisors (50661517168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25948581456 is a wasteful number, since it uses less digits than its factorization.

25948581456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77227939 (or 77227933 counting only the distinct ones).

The product of its digits is 13824000, while the sum is 57.

The spelling of 25948581456 in words is "twenty-five billion, nine hundred forty-eight million, five hundred eighty-one thousand, four hundred fifty-six".