25255775505405 has 32 divisors (see below), whose sum is σ = 41017941360000. Its totient is φ = 13266901435392.

The previous prime is 25255775505299. The next prime is 25255775505407. The reversal of 25255775505405 is 50450557755252.

It is not a de Polignac number, because 25255775505405 - 2¹⁸ = 25255775243261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25255775505407) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5700721 + ... + 9110969.

It is an arithmetic number, because the mean of its divisors is an integer number (1281810667500).

Almost surely, 2^{25255775505405} is an apocalyptic number.

It is an amenable number.

25255775505405 is a deficient number, since it is larger than the sum of its proper divisors (15762165854595).

25255775505405 is a wasteful number, since it uses less digits than its factorization.

25255775505405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3417693.

The product of its (nonzero) digits is 61250000, while the sum is 57.

The spelling of 25255775505405 in words is "twenty-five trillion, two hundred fifty-five billion, seven hundred seventy-five million, five hundred five thousand, four hundred five".