25505211015115 has 16 divisors (see below), whose sum is σ = 32961157449696. Its totient is φ = 18834287616000.

The previous prime is 25505211015103. The next prime is 25505211015133. The reversal of 25505211015115 is 51151011250552.

It is not a de Polignac number, because 25505211015115 - 2¹⁵ = 25505210982347 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337980 + ... + 7150150.

It is an arithmetic number, because the mean of its divisors is an integer number (2060072340606).

Almost surely, 2^{25505211015115} is an apocalyptic number.

25505211015115 is a deficient number, since it is larger than the sum of its proper divisors (7455946434581).

25505211015115 is a wasteful number, since it uses less digits than its factorization.

25505211015115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6869790.

The product of its (nonzero) digits is 12500, while the sum is 34.

Adding to 25505211015115 its reverse (51151011250552), we get a palindrome (76656222265667).

The spelling of 25505211015115 in words is "twenty-five trillion, five hundred five billion, two hundred eleven million, fifteen thousand, one hundred fifteen".