25340978050 has 24 divisors (see below), whose sum is σ = 47144740356. Its totient is φ = 10134128640.

The previous prime is 25340978017. The next prime is 25340978057. The reversal of 25340978050 is 5087904352.

It can be written as a sum of positive squares in 6 ways, for example, as 21040372809 + 4300605241 = 145053^2 + 65579^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25340977988 and 25340978006.

It is not an unprimeable number, because it can be changed into a prime (25340978057) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 179422 + ... + 287878.

Almost surely, 2^25340978050 is an apocalyptic number.

25340978050 is a deficient number, since it is larger than the sum of its proper divisors (21803762306).

25340978050 is a wasteful number, since it uses less digits than its factorization.

25340978050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113142 (or 113137 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 25340978050 in words is "twenty-five billion, three hundred forty million, nine hundred seventy-eight thousand, fifty".