21325532523 has 8 divisors (see below), whose sum is σ = 28834523136. Its totient is φ = 14016781800.

The previous prime is 21325532519. The next prime is 21325532537. The reversal of 21325532523 is 32523552312.

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

It is not a de Polignac number, because 21325532523 - 2² = 21325532519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21325532563) 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, 50059723 + ... + 50060148.

It is an arithmetic number, because the mean of its divisors is an integer number (3604315392).

Almost surely, 2^21325532523 is an apocalyptic number.

21325532523 is a deficient number, since it is larger than the sum of its proper divisors (7508990613).

21325532523 is a wasteful number, since it uses less digits than its factorization.

21325532523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100119945.

The product of its digits is 54000, while the sum is 33.

The spelling of 21325532523 in words is "twenty-one billion, three hundred twenty-five million, five hundred thirty-two thousand, five hundred twenty-three".