23525377310221 has 8 divisors (see below), whose sum is σ = 24338741185080. Its totient is φ = 22712156366592.

The previous prime is 23525377310119. The next prime is 23525377310297. The reversal of 23525377310221 is 12201377352532.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9224954382121 + 14300422928100 = 3037261^2 + 3781590^2 .

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 23525377310221 - 2²¹ = 23525375213069 is a prime.

It is a super-2 number, since 2×23525377310221² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23525377310521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35397880 + ... + 36056353.

It is an arithmetic number, because the mean of its divisors is an integer number (3042342648135).

Almost surely, 2^{23525377310221} is an apocalyptic number.

It is an amenable number.

23525377310221 is a deficient number, since it is larger than the sum of its proper divisors (813363874859).

23525377310221 is a wasteful number, since it uses less digits than its factorization.

23525377310221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71465615.

The product of its (nonzero) digits is 529200, while the sum is 43.

The spelling of 23525377310221 in words is "twenty-three trillion, five hundred twenty-five billion, three hundred seventy-seven million, three hundred ten thousand, two hundred twenty-one".