1421853532225 has 135 divisors (see below), whose sum is σ = 2138938500681. Its totient is φ = 937524369600.

The previous prime is 1421853532219. The next prime is 1421853532247. The reversal of 1421853532225 is 5222353581241.

The square root of 1421853532225 is 1192415.

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

It can be written as a sum of positive squares in 4 ways, for example, as 171965307969 + 1249888224256 = 414687^2 + 1117984^2 .

It is not a de Polignac number, because 1421853532225 - 2⁷ = 1421853532097 is a prime.

It is a super-2 number, since 2×1421853532225² (a number of 25 digits) contains 22 as substring.

Its product of digits (576000) is a multiple of the sum of its prime divisors (200).

It is an unprimeable number.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 9056391847 + ... + 9056392003.

Almost surely, 2^{1421853532225} is an apocalyptic number.

1421853532225 is the 1192415-th square number.

1421853532225 is the 596208-th centered octagonal number.

It is an amenable number.

1421853532225 is a deficient number, since it is larger than the sum of its proper divisors (717084968456).

1421853532225 is an frugal number, since it uses more digits than its factorization.

1421853532225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414 (or 200 counting only the distinct ones).

The product of its digits is 576000, while the sum is 43.

The spelling of 1421853532225 in words is "one trillion, four hundred twenty-one billion, eight hundred fifty-three million, five hundred thirty-two thousand, two hundred twenty-five".