221525041252373 has 8 divisors (see below), whose sum is σ = 224194304628000. Its totient is φ = 218855784709648.

The previous prime is 221525041252357. The next prime is 221525041252433. The reversal of 221525041252373 is 373252140525122.

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 221525041252373 - 2⁴ = 221525041252357 is a prime.

It is a super-2 number, since 2×221525041252373² (a number of 29 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 (221525041252313) 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, 99265778 + ... + 101472876.

It is an arithmetic number, because the mean of its divisors is an integer number (28024288078500).

Almost surely, 2^{221525041252373} is an apocalyptic number.

It is an amenable number.

221525041252373 is a deficient number, since it is larger than the sum of its proper divisors (2669263375627).

221525041252373 is a wasteful number, since it uses less digits than its factorization.

221525041252373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3416451.

The product of its (nonzero) digits is 1008000, while the sum is 44.

Adding to 221525041252373 its reverse (373252140525122), we get a palindrome (594777181777495).

The spelling of 221525041252373 in words is "two hundred twenty-one trillion, five hundred twenty-five billion, forty-one million, two hundred fifty-two thousand, three hundred seventy-three".