2169242937225 has 405 divisors, whose sum is σ = 4956029842803. Its totient is φ = 904344255360.

The previous prime is 2169242937217. The next prime is 2169242937263. The reversal of 2169242937225 is 5227392429612.

The square root of 2169242937225 is 1472835.

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

2169242937225 is a `hidden beast` number, since 2 + 1 + 6 + 9 + 242 + 9 + 372 + 25 = 666.

It can be written as a sum of positive squares in 7 ways, for example, as 2128362949881 + 40879987344 = 1458891^2 + 202188^2 .

It is not a de Polignac number, because 2169242937225 - 2³ = 2169242937217 is a prime.

It is a super-2 number, since 2×2169242937225² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 404 ways as a sum of consecutive naturals, for example, 26135457034 + ... + 26135457116.

Almost surely, 2^{2169242937225} is an apocalyptic number.

2169242937225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2169242937225 is the 1472835-th square number.

2169242937225 is the 736418-th centered octagonal number.

It is an amenable number.

2169242937225 is an abundant number, since it is smaller than the sum of its proper divisors (2786786905578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2169242937225 is an frugal number, since it uses more digits than its factorization.

2169242937225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248 (or 111 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 54.

The spelling of 2169242937225 in words is "two trillion, one hundred sixty-nine billion, two hundred forty-two million, nine hundred thirty-seven thousand, two hundred twenty-five".