1251425005417 has 2 divisors, whose sum is σ = 1251425005418. Its totient is φ = 1251425005416.

The previous prime is 1251425005409. The next prime is 1251425005451. The reversal of 1251425005417 is 7145005241521.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 954693143056 + 296731862361 = 977084^2 + 544731^2 .

It is a cyclic number.

It is not a de Polignac number, because 1251425005417 - 2³ = 1251425005409 is a prime.

It is not a weakly prime, because it can be changed into another prime (1251425005517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625712502708 + 625712502709.

It is an arithmetic number, because the mean of its divisors is an integer number (625712502709).

Almost surely, 2^{1251425005417} is an apocalyptic number.

It is an amenable number.

1251425005417 is a deficient number, since it is larger than the sum of its proper divisors (1).

1251425005417 is an equidigital number, since it uses as much as digits as its factorization.

1251425005417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56000, while the sum is 37.

The spelling of 1251425005417 in words is "one trillion, two hundred fifty-one billion, four hundred twenty-five million, five thousand, four hundred seventeen".