1250015200561 has 2 divisors, whose sum is σ = 1250015200562. Its totient is φ = 1250015200560.

The previous prime is 1250015200513. The next prime is 1250015200571. The reversal of 1250015200561 is 1650025100521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1217147323536 + 32867877025 = 1103244^2 + 181295^2 .

It is a cyclic number.

It is not a de Polignac number, because 1250015200561 - 2³⁷ = 1112576247089 is a prime.

It is not a weakly prime, because it can be changed into another prime (1250015200571) 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 as a sum of consecutive naturals, namely, 625007600280 + 625007600281.

It is an arithmetic number, because the mean of its divisors is an integer number (625007600281).

Almost surely, 2^{1250015200561} is an apocalyptic number.

It is an amenable number.

1250015200561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1250015200561 is an equidigital number, since it uses as much as digits as its factorization.

1250015200561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3000, while the sum is 28.

The spelling of 1250015200561 in words is "one trillion, two hundred fifty billion, fifteen million, two hundred thousand, five hundred sixty-one".