25473296138 has 16 divisors (see below), whose sum is σ = 40197492000. Its totient is φ = 12089020272.

The previous prime is 25473296113. The next prime is 25473296201. The reversal of 25473296138 is 83169237452.

It is a super-2 number, since 2×25473296138² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3718568 + ... + 3725411.

It is an arithmetic number, because the mean of its divisors is an integer number (2512343250).

Almost surely, 2^25473296138 is an apocalyptic number.

25473296138 is a deficient number, since it is larger than the sum of its proper divisors (14724195862).

25473296138 is a wasteful number, since it uses less digits than its factorization.

25473296138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7444069.

The product of its digits is 2177280, while the sum is 50.

The spelling of 25473296138 in words is "twenty-five billion, four hundred seventy-three million, two hundred ninety-six thousand, one hundred thirty-eight".