25103505215 has 16 divisors (see below), whose sum is σ = 30981950496. Its totient is φ = 19514880000.

The previous prime is 25103505191. The next prime is 25103505247. The reversal of 25103505215 is 51250530152.

It is not a de Polignac number, because 25103505215 - 2¹⁰ = 25103504191 is a prime.

It is a Duffinian number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 192482 + ... + 295391.

It is an arithmetic number, because the mean of its divisors is an integer number (1936371906).

Almost surely, 2^25103505215 is an apocalyptic number.

25103505215 is a deficient number, since it is larger than the sum of its proper divisors (5878445281).

25103505215 is a wasteful number, since it uses less digits than its factorization.

25103505215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488170.

The product of its (nonzero) digits is 7500, while the sum is 29.

The spelling of 25103505215 in words is "twenty-five billion, one hundred three million, five hundred five thousand, two hundred fifteen".