10425156221 has 2 divisors, whose sum is σ = 10425156222. Its totient is φ = 10425156220.

The previous prime is 10425156197. The next prime is 10425156229. The reversal of 10425156221 is 12265152401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7575091225 + 2850064996 = 87035^2 + 53386^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10425156221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10425156229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5212578110 + 5212578111.

It is an arithmetic number, because the mean of its divisors is an integer number (5212578111).

Almost surely, 2^10425156221 is an apocalyptic number.

It is an amenable number.

10425156221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10425156221 is an equidigital number, since it uses as much as digits as its factorization.

10425156221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 29.

The spelling of 10425156221 in words is "ten billion, four hundred twenty-five million, one hundred fifty-six thousand, two hundred twenty-one".