1025636231169 has 27 divisors (see below), whose sum is σ = 1628450715619. Its totient is φ = 621577461120.

The previous prime is 1025636231167. The next prime is 1025636231173. The reversal of 1025636231169 is 9611326365201.

The square root of 1025636231169 is 1012737.

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

1025636231169 is a `hidden beast` number, since 1 + 0 + 2 + 5 + 6 + 3 + 623 + 1 + 16 + 9 = 666.

1025636231169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1017098471169 + 8537760000 = 1008513^2 + 92400^2 .

It is not a de Polignac number, because 1025636231169 - 2¹ = 1025636231167 is a prime.

It is a super-2 number, since 2×1025636231169² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1025636231167) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 33404977 + ... + 33435665.

Almost surely, 2^{1025636231169} is an apocalyptic number.

1025636231169 is the 1012737-th square number.

1025636231169 is the 506369-th centered octagonal number.

It is an amenable number.

1025636231169 is a deficient number, since it is larger than the sum of its proper divisors (602814484450).

1025636231169 is an frugal number, since it uses more digits than its factorization.

1025636231169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61406 (or 30703 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The spelling of 1025636231169 in words is "one trillion, twenty-five billion, six hundred thirty-six million, two hundred thirty-one thousand, one hundred sixty-nine".