25523475109 has 8 divisors (see below), whose sum is σ = 27845748000. Its totient is φ = 23201528400.

The previous prime is 25523475101. The next prime is 25523475119. The reversal of 25523475109 is 90157432552.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25523475109 - 2³ = 25523475101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25523475101) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 99574 + ... + 246904.

It is an arithmetic number, because the mean of its divisors is an integer number (3480718500).

Almost surely, 2^25523475109 is an apocalyptic number.

It is an amenable number.

25523475109 is a deficient number, since it is larger than the sum of its proper divisors (2322272891).

25523475109 is a wasteful number, since it uses less digits than its factorization.

25523475109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163091.

The product of its (nonzero) digits is 378000, while the sum is 43.

The spelling of 25523475109 in words is "twenty-five billion, five hundred twenty-three million, four hundred seventy-five thousand, one hundred nine".