1251455125451 has 2 divisors, whose sum is σ = 1251455125452. Its totient is φ = 1251455125450.

The previous prime is 1251455125433. The next prime is 1251455125517. The reversal of 1251455125451 is 1545215541521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1251455125451 - 2¹⁴ = 1251455109067 is a prime.

It is a super-2 number, since 2×1251455125451² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1251455125399 and 1251455125408.

It is not a weakly prime, because it can be changed into another prime (1251455125411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625727562725 + 625727562726.

It is an arithmetic number, because the mean of its divisors is an integer number (625727562726).

Almost surely, 2^{1251455125451} is an apocalyptic number.

1251455125451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1251455125451 is an equidigital number, since it uses as much as digits as its factorization.

1251455125451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 200000, while the sum is 41.

The spelling of 1251455125451 in words is "one trillion, two hundred fifty-one billion, four hundred fifty-five million, one hundred twenty-five thousand, four hundred fifty-one".