141625021561 has 9 divisors (see below), whose sum is σ = 142255149231. Its totient is φ = 140997677784.

The previous prime is 141625021459. The next prime is 141625021567. The reversal of 141625021561 is 165120526141.

The square root of 141625021561 is 376331.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 9318233961 + 132306787600 = 96531^2 + 363740^2 .

It is not a de Polignac number, because 141625021561 - 2¹¹ = 141625019513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (141625021567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 101232340 + ... + 101233738.

Almost surely, 2^141625021561 is an apocalyptic number.

141625021561 is the 376331-st square number.

141625021561 is the 188166-th centered octagonal number.

It is an amenable number.

141625021561 is a deficient number, since it is larger than the sum of its proper divisors (630127670).

141625021561 is an frugal number, since it uses more digits than its factorization.

141625021561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3336 (or 1668 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 34.

The spelling of 141625021561 in words is "one hundred forty-one billion, six hundred twenty-five million, twenty-one thousand, five hundred sixty-one".