501304220225 has 12 divisors (see below), whose sum is σ = 621717412524. Its totient is φ = 400978744320.

The previous prime is 501304220213. The next prime is 501304220237. The reversal of 501304220225 is 522022403105.

It is an interprime number because it is at equal distance from previous prime (501304220213) and next prime (501304220237).

It can be written as a sum of positive squares in 6 ways, for example, as 46919025664 + 454385194561 = 216608^2 + 674081^2 .

It is not a de Polignac number, because 501304220225 - 2¹⁰ = 501304219201 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 501304220194 and 501304220203.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1457264 + ... + 1768113.

It is an arithmetic number, because the mean of its divisors is an integer number (51809784377).

Almost surely, 2^501304220225 is an apocalyptic number.

It is an amenable number.

501304220225 is a deficient number, since it is larger than the sum of its proper divisors (120413192299).

501304220225 is a wasteful number, since it uses less digits than its factorization.

501304220225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3231604 (or 3231599 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The spelling of 501304220225 in words is "five hundred one billion, three hundred four million, two hundred twenty thousand, two hundred twenty-five".