13525250021 has 8 divisors (see below), whose sum is σ = 13721308224. Its totient is φ = 13330437120.

The previous prime is 13525249993. The next prime is 13525250033. The reversal of 13525250021 is 12005252531.

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 13525250021 - 2³⁰ = 12451508197 is a prime.

It is a super-3 number, since 3×13525250021³ (a number of 31 digits) contains 333 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 (13525250621) 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, 289436 + ... + 332901.

It is an arithmetic number, because the mean of its divisors is an integer number (1715163528).

Almost surely, 2^13525250021 is an apocalyptic number.

It is an amenable number.

13525250021 is a deficient number, since it is larger than the sum of its proper divisors (196058203).

13525250021 is a wasteful number, since it uses less digits than its factorization.

13525250021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622651.

The product of its (nonzero) digits is 3000, while the sum is 26.

The spelling of 13525250021 in words is "thirteen billion, five hundred twenty-five million, two hundred fifty thousand, twenty-one".