1902427111225 has 27 divisors (see below), whose sum is σ = 2369290372111. Its totient is φ = 1515337672400.

The previous prime is 1902427111181. The next prime is 1902427111301. The reversal of 1902427111225 is 5221117242091.

The square root of 1902427111225 is 1379285.

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., 684873760041 + 1217553351184 = 827571^2 + 1103428^2 .

It is not a de Polignac number, because 1902427111225 - 2²⁵ = 1902393556793 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2144787732 + ... + 2144788618.

Almost surely, 2^{1902427111225} is an apocalyptic number.

1902427111225 is the 1379285-th square number.

1902427111225 is the 689643-rd centered octagonal number.

It is an amenable number.

1902427111225 is a deficient number, since it is larger than the sum of its proper divisors (466863260886).

1902427111225 is an frugal number, since it uses more digits than its factorization.

1902427111225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2406 (or 1203 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 37.

The spelling of 1902427111225 in words is "one trillion, nine hundred two billion, four hundred twenty-seven million, one hundred eleven thousand, two hundred twenty-five".