21525500414 has 8 divisors (see below), whose sum is σ = 35223546168. Its totient is φ = 9784318360.

The previous prime is 21525500413. The next prime is 21525500441. The reversal of 21525500414 is 41400552512.

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

It is a super-2 number, since 2×21525500414² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21525500413) 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, 489215897 + ... + 489215940.

It is an arithmetic number, because the mean of its divisors is an integer number (4402943271).

Almost surely, 2^21525500414 is an apocalyptic number.

21525500414 is a deficient number, since it is larger than the sum of its proper divisors (13698045754).

21525500414 is a wasteful number, since it uses less digits than its factorization.

21525500414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978431850.

The product of its (nonzero) digits is 8000, while the sum is 29.

The spelling of 21525500414 in words is "twenty-one billion, five hundred twenty-five million, five hundred thousand, four hundred fourteen".