5651225634521 has 2 divisors, whose sum is σ = 5651225634522. Its totient is φ = 5651225634520.

The previous prime is 5651225634479. The next prime is 5651225634643. The reversal of 5651225634521 is 1254365221565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3960279102025 + 1690946532496 = 1990045^2 + 1300364^2 .

It is a cyclic number.

It is not a de Polignac number, because 5651225634521 - 2¹⁰ = 5651225633497 is a prime.

It is not a weakly prime, because it can be changed into another prime (5651225630521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2825612817260 + 2825612817261.

It is an arithmetic number, because the mean of its divisors is an integer number (2825612817261).

Almost surely, 2^{5651225634521} is an apocalyptic number.

It is an amenable number.

5651225634521 is a deficient number, since it is larger than the sum of its proper divisors (1).

5651225634521 is an equidigital number, since it uses as much as digits as its factorization.

5651225634521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160000, while the sum is 47.

The spelling of 5651225634521 in words is "five trillion, six hundred fifty-one billion, two hundred twenty-five million, six hundred thirty-four thousand, five hundred twenty-one".