25540241386 has 32 divisors (see below), whose sum is σ = 43001614656. Its totient is φ = 11276496000.

The previous prime is 25540241383. The next prime is 25540241399. The reversal of 25540241386 is 68314204552.

It is not an unprimeable number, because it can be changed into a prime (25540241383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96646 + ... + 245806.

It is an arithmetic number, because the mean of its divisors is an integer number (1343800458).

Almost surely, 2^25540241386 is an apocalyptic number.

25540241386 is a deficient number, since it is larger than the sum of its proper divisors (17461373270).

25540241386 is a wasteful number, since it uses less digits than its factorization.

25540241386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149398.

The product of its (nonzero) digits is 230400, while the sum is 40.

The spelling of 25540241386 in words is "twenty-five billion, five hundred forty million, two hundred forty-one thousand, three hundred eighty-six".