1251425005379 has 2 divisors, whose sum is σ = 1251425005380. Its totient is φ = 1251425005378.

The previous prime is 1251425005361. The next prime is 1251425005409. The reversal of 1251425005379 is 9735005241521.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1251425005379 is a prime.

It is not a weakly prime, because it can be changed into another prime (1251425005079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625712502689 + 625712502690.

It is an arithmetic number, because the mean of its divisors is an integer number (625712502690).

Almost surely, 2^{1251425005379} is an apocalyptic number.

1251425005379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1251425005379 is an equidigital number, since it uses as much as digits as its factorization.

1251425005379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378000, while the sum is 44.

The spelling of 1251425005379 in words is "one trillion, two hundred fifty-one billion, four hundred twenty-five million, five thousand, three hundred seventy-nine".