23521025005 has 4 divisors (see below), whose sum is σ = 28225230012. Its totient is φ = 18816820000.

The previous prime is 23521024997. The next prime is 23521025009. The reversal of 23521025005 is 50052012532.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15960026889 + 7560998116 = 126333^2 + 86954^2 .

It is not a de Polignac number, because 23521025005 - 2³ = 23521024997 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 (23521025009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2352102496 + ... + 2352102505.

It is an arithmetic number, because the mean of its divisors is an integer number (7056307503).

Almost surely, 2^23521025005 is an apocalyptic number.

It is an amenable number.

23521025005 is a deficient number, since it is larger than the sum of its proper divisors (4704205007).

23521025005 is an equidigital number, since it uses as much as digits as its factorization.

23521025005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4704205006.

The product of its (nonzero) digits is 3000, while the sum is 25.

Adding to 23521025005 its reverse (50052012532), we get a palindrome (73573037537).

The spelling of 23521025005 in words is "twenty-three billion, five hundred twenty-one million, twenty-five thousand, five".