21525601301 has 8 divisors (see below), whose sum is σ = 21694108800. Its totient is φ = 21357435600.

The previous prime is 21525601291. The next prime is 21525601319. The reversal of 21525601301 is 10310652512.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21525601301 is a prime.

It is a super-2 number, since 2×21525601301² (a number of 21 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 (21525601001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41735 + ... + 211643.

It is an arithmetic number, because the mean of its divisors is an integer number (2711763600).

Almost surely, 2^21525601301 is an apocalyptic number.

It is an amenable number.

21525601301 is a deficient number, since it is larger than the sum of its proper divisors (168507499).

21525601301 is a wasteful number, since it uses less digits than its factorization.

21525601301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170899.

The product of its (nonzero) digits is 1800, while the sum is 26.

The spelling of 21525601301 in words is "twenty-one billion, five hundred twenty-five million, six hundred one thousand, three hundred one".