1825165874169 has 27 divisors (see below), whose sum is σ = 2897877760869. Its totient is φ = 1106134116120.

The previous prime is 1825165874107. The next prime is 1825165874197. The reversal of 1825165874169 is 9614785615281.

The square root of 1825165874169 is 1350987.

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

1825165874169 is a `hidden beast` number, since 1 + 8 + 2 + 5 + 1 + 6 + 587 + 41 + 6 + 9 = 666.

It is not a de Polignac number, because 1825165874169 - 2³⁷ = 1687726920697 is a prime.

It is a super-2 number, since 2×1825165874169² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1825165874269) by changing a digit.

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 26 ways as a sum of consecutive naturals, for example, 44562102 + ... + 44603040.

Almost surely, 2^{1825165874169} is an apocalyptic number.

1825165874169 is the 1350987-th square number.

1825165874169 is the 675494-th centered octagonal number.

It is an amenable number.

1825165874169 is a deficient number, since it is larger than the sum of its proper divisors (1072711886700).

1825165874169 is an frugal number, since it uses more digits than its factorization.

1825165874169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81906 (or 40953 counting only the distinct ones).

The product of its digits is 29030400, while the sum is 63.

The spelling of 1825165874169 in words is "one trillion, eight hundred twenty-five billion, one hundred sixty-five million, eight hundred seventy-four thousand, one hundred sixty-nine".