425356602221 has 2 divisors, whose sum is σ = 425356602222. Its totient is φ = 425356602220.

The previous prime is 425356602133. The next prime is 425356602259. The reversal of 425356602221 is 122206653524.

It is an a-pointer prime, because the next prime (425356602259) can be obtained adding 425356602221 to its sum of digits (38).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 425143120900 + 213481321 = 652030^2 + 14611^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425356602221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425356604221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212678301110 + 212678301111.

It is an arithmetic number, because the mean of its divisors is an integer number (212678301111).

Almost surely, 2^425356602221 is an apocalyptic number.

It is an amenable number.

425356602221 is a deficient number, since it is larger than the sum of its proper divisors (1).

425356602221 is an equidigital number, since it uses as much as digits as its factorization.

425356602221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 425356602221 in words is "four hundred twenty-five billion, three hundred fifty-six million, six hundred two thousand, two hundred twenty-one".