21441025500452 has 6 divisors (see below), whose sum is σ = 37521794625798. Its totient is φ = 10720512750224.

The previous prime is 21441025500443. The next prime is 21441025500457. The reversal of 21441025500452 is 25400552014412.

It can be written as a sum of positive squares in only one way, i.e., 21164913085156 + 276112415296 = 4600534^2 + 525464^2 .

It is a super-2 number, since 2×21441025500452² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21441025500457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2680128187553 + ... + 2680128187560.

It is an arithmetic number, because the mean of its divisors is an integer number (6253632437633).

Almost surely, 2^{21441025500452} is an apocalyptic number.

It is an amenable number.

21441025500452 is a deficient number, since it is larger than the sum of its proper divisors (16080769125346).

21441025500452 is a wasteful number, since it uses less digits than its factorization.

21441025500452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5360256375117 (or 5360256375115 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 35.

Adding to 21441025500452 its reverse (25400552014412), we get a palindrome (46841577514864).

The spelling of 21441025500452 in words is "twenty-one trillion, four hundred forty-one billion, twenty-five million, five hundred thousand, four hundred fifty-two".