1361250025601 has 2 divisors, whose sum is σ = 1361250025602. Its totient is φ = 1361250025600.

The previous prime is 1361250025549. The next prime is 1361250025627. The reversal of 1361250025601 is 1065200521631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1269047310400 + 92202715201 = 1126520^2 + 303649^2 .

It is a cyclic number.

It is not a de Polignac number, because 1361250025601 - 2¹⁸ = 1361249763457 is a prime.

It is a super-2 number, since 2×1361250025601² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1361250025631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680625012800 + 680625012801.

It is an arithmetic number, because the mean of its divisors is an integer number (680625012801).

Almost surely, 2^{1361250025601} is an apocalyptic number.

It is an amenable number.

1361250025601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361250025601 is an equidigital number, since it uses as much as digits as its factorization.

1361250025601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 32.

The spelling of 1361250025601 in words is "one trillion, three hundred sixty-one billion, two hundred fifty million, twenty-five thousand, six hundred one".