1021434806225 has 12 divisors (see below), whose sum is σ = 1278199155420. Its totient is φ = 809651073600.

The previous prime is 1021434806219. The next prime is 1021434806279. The reversal of 1021434806225 is 5226084341201.

It can be written as a sum of positive squares in 6 ways, for example, as 609497344 + 1020825308881 = 24688^2 + 1010359^2 .

It is not a de Polignac number, because 1021434806225 - 2⁴ = 1021434806209 is a prime.

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, 187416506 + ... + 187421955.

It is an arithmetic number, because the mean of its divisors is an integer number (106516596285).

Almost surely, 2^{1021434806225} is an apocalyptic number.

It is an amenable number.

1021434806225 is a deficient number, since it is larger than the sum of its proper divisors (256764349195).

1021434806225 is a wasteful number, since it uses less digits than its factorization.

1021434806225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374838580 (or 374838575 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 38.

The spelling of 1021434806225 in words is "one trillion, twenty-one billion, four hundred thirty-four million, eight hundred six thousand, two hundred twenty-five".