4925397221 has 2 divisors, whose sum is σ = 4925397222. Its totient is φ = 4925397220.

The previous prime is 4925397181. The next prime is 4925397223. The reversal of 4925397221 is 1227935294.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4397546596 + 527850625 = 66314^2 + 22975^2 .

It is a cyclic number.

It is not a de Polignac number, because 4925397221 - 2⁶ = 4925397157 is a prime.

Together with 4925397223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4925397223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2462698610 + 2462698611.

It is an arithmetic number, because the mean of its divisors is an integer number (2462698611).

Almost surely, 2^4925397221 is an apocalyptic number.

It is an amenable number.

4925397221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4925397221 is an equidigital number, since it uses as much as digits as its factorization.

4925397221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 44.

The square root of 4925397221 is about 70181.1742634732. The cubic root of 4925397221 is about 1701.4286975873.

The spelling of 4925397221 in words is "four billion, nine hundred twenty-five million, three hundred ninety-seven thousand, two hundred twenty-one".