425449073147831 has 2 divisors, whose sum is σ = 425449073147832. Its totient is φ = 425449073147830.

The previous prime is 425449073147807. The next prime is 425449073147963. The reversal of 425449073147831 is 138741370944524.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 425449073147831 - 2²⁶ = 425449006038967 is a prime.

It is a super-2 number, since 2×425449073147831² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425449043147831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212724536573915 + 212724536573916.

It is an arithmetic number, because the mean of its divisors is an integer number (212724536573916).

Almost surely, 2^{425449073147831} is an apocalyptic number.

425449073147831 is a deficient number, since it is larger than the sum of its proper divisors (1).

425449073147831 is an equidigital number, since it uses as much as digits as its factorization.

425449073147831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81285120, while the sum is 62.

The spelling of 425449073147831 in words is "four hundred twenty-five trillion, four hundred forty-nine billion, seventy-three million, one hundred forty-seven thousand, eight hundred thirty-one".