1251425532451 has 2 divisors, whose sum is σ = 1251425532452. Its totient is φ = 1251425532450.

The previous prime is 1251425532431. The next prime is 1251425532517. The reversal of 1251425532451 is 1542355241521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1251425532451 - 2¹¹ = 1251425530403 is a prime.

It is not a weakly prime, because it can be changed into another prime (1251425532431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625712766225 + 625712766226.

It is an arithmetic number, because the mean of its divisors is an integer number (625712766226).

Almost surely, 2^{1251425532451} is an apocalyptic number.

1251425532451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1251425532451 is an equidigital number, since it uses as much as digits as its factorization.

1251425532451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240000, while the sum is 40.

The spelling of 1251425532451 in words is "one trillion, two hundred fifty-one billion, four hundred twenty-five million, five hundred thirty-two thousand, four hundred fifty-one".