25325105215 has 16 divisors (see below), whose sum is σ = 30875679072. Its totient is φ = 19937009664.

The previous prime is 25325105171. The next prime is 25325105231. The reversal of 25325105215 is 51250152352.

It is a cyclic number.

It is not a de Polignac number, because 25325105215 - 2¹³ = 25325097023 is a prime.

It is a Duffinian number.

It is a congruent 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, 288607 + ... + 365983.

It is an arithmetic number, because the mean of its divisors is an integer number (1929729942).

Almost surely, 2^25325105215 is an apocalyptic number.

25325105215 is a deficient number, since it is larger than the sum of its proper divisors (5550573857).

25325105215 is an equidigital number, since it uses as much as digits as its factorization.

25325105215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78426.

The product of its (nonzero) digits is 15000, while the sum is 31.

Adding to 25325105215 its reverse (51250152352), we get a palindrome (76575257567).

The spelling of 25325105215 in words is "twenty-five billion, three hundred twenty-five million, one hundred five thousand, two hundred fifteen".