1892811882025 has 9 divisors (see below), whose sum is σ = 2347095263671. Its totient is φ = 1514244002440.

The previous prime is 1892811882023. The next prime is 1892811882107. The reversal of 1892811882025 is 5202881182981.

The square root of 1892811882025 is 1375795.

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., 681412277529 + 1211399604496 = 825477^2 + 1100636^2 .

It is not a de Polignac number, because 1892811882025 - 2¹ = 1892811882023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1892811882023) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6741396 + ... + 7016554.

Almost surely, 2^{1892811882025} is an apocalyptic number.

1892811882025 is the 1375795-th square number.

1892811882025 is the 687898-th centered octagonal number.

It is an amenable number.

1892811882025 is a deficient number, since it is larger than the sum of its proper divisors (454283381646).

1892811882025 is an frugal number, since it uses more digits than its factorization.

1892811882025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550328 (or 275164 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 55.

The spelling of 1892811882025 in words is "one trillion, eight hundred ninety-two billion, eight hundred eleven million, eight hundred eighty-two thousand, twenty-five".