1071090454225 has 81 divisors (see below), whose sum is σ = 1510970656923. Its totient is φ = 752604732000.

The previous prime is 1071090454223. The next prime is 1071090454237. The reversal of 1071090454225 is 5224540901701.

The square root of 1071090454225 is 1034935.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 385592563521 + 685497890704 = 620961^2 + 827948^2 .

It is not a de Polignac number, because 1071090454225 - 2¹ = 1071090454223 is a prime.

It is a super-2 number, since 2×1071090454225² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1071090454223) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 1764563872 + ... + 1764564478.

Almost surely, 2^{1071090454225} is an apocalyptic number.

1071090454225 is the 1034935-th square number.

1071090454225 is the 517468-th centered octagonal number.

It is an amenable number.

1071090454225 is a deficient number, since it is larger than the sum of its proper divisors (439880202698).

1071090454225 is an frugal number, since it uses more digits than its factorization.

1071090454225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308 (or 654 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 1071090454225 in words is "one trillion, seventy-one billion, ninety million, four hundred fifty-four thousand, two hundred twenty-five".