1784882640025 has 9 divisors (see below), whose sum is σ = 2213262756831. Its totient is φ = 1427900768040.

The previous prime is 1784882640019. The next prime is 1784882640049. The reversal of 1784882640025 is 5200462884871.

The square root of 1784882640025 is 1335995.

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., 642557750409 + 1142324889616 = 801597^2 + 1068796^2 .

It is not a de Polignac number, because 1784882640025 - 2¹⁷ = 1784882508953 is a prime.

It is a super-2 number, since 2×1784882640025² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6546376 + ... + 6813574.

Almost surely, 2^{1784882640025} is an apocalyptic number.

1784882640025 is the 1335995-th square number.

1784882640025 is the 667998-th centered octagonal number.

It is an amenable number.

1784882640025 is a deficient number, since it is larger than the sum of its proper divisors (428380116806).

1784882640025 is an frugal number, since it uses more digits than its factorization.

1784882640025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534408 (or 267204 counting only the distinct ones).

The product of its (nonzero) digits is 6881280, while the sum is 55.

The spelling of 1784882640025 in words is "one trillion, seven hundred eighty-four billion, eight hundred eighty-two million, six hundred forty thousand, twenty-five".