1625723146469 has 2 divisors, whose sum is σ = 1625723146470. Its totient is φ = 1625723146468.

The previous prime is 1625723146379. The next prime is 1625723146499. The reversal of 1625723146469 is 9646413275261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1557229452100 + 68493694369 = 1247890^2 + 261713^2 .

It is a cyclic number.

It is not a de Polignac number, because 1625723146469 - 2²⁰ = 1625722097893 is a prime.

It is a super-2 number, since 2×1625723146469² (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 (1625723146499) 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, 812861573234 + 812861573235.

It is an arithmetic number, because the mean of its divisors is an integer number (812861573235).

Almost surely, 2^{1625723146469} is an apocalyptic number.

It is an amenable number.

1625723146469 is a deficient number, since it is larger than the sum of its proper divisors (1).

1625723146469 is an equidigital number, since it uses as much as digits as its factorization.

1625723146469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13063680, while the sum is 56.

The spelling of 1625723146469 in words is "one trillion, six hundred twenty-five billion, seven hundred twenty-three million, one hundred forty-six thousand, four hundred sixty-nine".