25510005445 has 16 divisors (see below), whose sum is σ = 30844365552. Its totient is φ = 20253680640.

The previous prime is 25510005413. The next prime is 25510005497. The reversal of 25510005445 is 54450001552.

It can be written as a sum of positive squares in 8 ways, for example, as 1936088001 + 23573917444 = 44001^2 + 153538^2 .

It is not a de Polignac number, because 25510005445 - 2⁵ = 25510005413 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 (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316939 + ... + 389191.

It is an arithmetic number, because the mean of its divisors is an integer number (1927772847).

Almost surely, 2^25510005445 is an apocalyptic number.

It is an amenable number.

25510005445 is a deficient number, since it is larger than the sum of its proper divisors (5334360107).

25510005445 is a wasteful number, since it uses less digits than its factorization.

25510005445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72792.

The product of its (nonzero) digits is 20000, while the sum is 31.

Adding to 25510005445 its reverse (54450001552), we get a palindrome (79960006997).

The spelling of 25510005445 in words is "twenty-five billion, five hundred ten million, five thousand, four hundred forty-five".