1425722551381 has 2 divisors, whose sum is σ = 1425722551382. Its totient is φ = 1425722551380.

The previous prime is 1425722551349. The next prime is 1425722551403. The reversal of 1425722551381 is 1831552275241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1412734302225 + 12988249156 = 1188585^2 + 113966^2 .

It is a cyclic number.

It is not a de Polignac number, because 1425722551381 - 2⁵ = 1425722551349 is a prime.

It is a super-2 number, since 2×1425722551381² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1425722551681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 712861275690 + 712861275691.

It is an arithmetic number, because the mean of its divisors is an integer number (712861275691).

Almost surely, 2^{1425722551381} is an apocalyptic number.

It is an amenable number.

1425722551381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1425722551381 is an equidigital number, since it uses as much as digits as its factorization.

1425722551381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672000, while the sum is 46.

The spelling of 1425722551381 in words is "one trillion, four hundred twenty-five billion, seven hundred twenty-two million, five hundred fifty-one thousand, three hundred eighty-one".