1533225421601 has 2 divisors, whose sum is σ = 1533225421602. Its totient is φ = 1533225421600.

The previous prime is 1533225421571. The next prime is 1533225421621. The reversal of 1533225421601 is 1061245223351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1372648903201 + 160576518400 = 1171601^2 + 400720^2 .

It is a cyclic number.

It is not a de Polignac number, because 1533225421601 - 2²⁶ = 1533158312737 is a prime.

It is not a weakly prime, because it can be changed into another prime (1533225421621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 766612710800 + 766612710801.

It is an arithmetic number, because the mean of its divisors is an integer number (766612710801).

Almost surely, 2^{1533225421601} is an apocalyptic number.

It is an amenable number.

1533225421601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1533225421601 is an equidigital number, since it uses as much as digits as its factorization.

1533225421601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 1533225421601 in words is "one trillion, five hundred thirty-three billion, two hundred twenty-five million, four hundred twenty-one thousand, six hundred one".