25550124135 has 16 divisors (see below), whose sum is σ = 40883318784. Its totient is φ = 13625692832.

The previous prime is 25550124121. The next prime is 25550124139. The reversal of 25550124135 is 53142105552.

It is a cyclic number.

It is not a de Polignac number, because 25550124135 - 2¹⁰ = 25550123111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25550124096 and 25550124105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25550124139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164134 + ... + 279356.

It is an arithmetic number, because the mean of its divisors is an integer number (2555207424).

Almost surely, 2^25550124135 is an apocalyptic number.

25550124135 is a deficient number, since it is larger than the sum of its proper divisors (15333194649).

25550124135 is a wasteful number, since it uses less digits than its factorization.

25550124135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130014.

The product of its (nonzero) digits is 30000, while the sum is 33.

Adding to 25550124135 its reverse (53142105552), we get a palindrome (78692229687).

The spelling of 25550124135 in words is "twenty-five billion, five hundred fifty million, one hundred twenty-four thousand, one hundred thirty-five".