1025267121 has 12 divisors (see below), whose sum is σ = 1487411380. Its totient is φ = 680525280.

The previous prime is 1025267119. The next prime is 1025267129. The reversal of 1025267121 is 1217625201.

1025267121 is a `hidden beast` number, since 10 + 2 + 526 + 7 + 121 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 574129521 + 451137600 = 23961^2 + 21240^2 .

It is not a de Polignac number, because 1025267121 - 2¹ = 1025267119 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1025267129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 246670 + ... + 250791.

Almost surely, 2^1025267121 is an apocalyptic number.

It is an amenable number.

1025267121 is a deficient number, since it is larger than the sum of its proper divisors (462144259).

1025267121 is a wasteful number, since it uses less digits than its factorization.

1025267121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497696 (or 497693 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 1025267121 is about 32019.7926445503. The cubic root of 1025267121 is about 1008.3524165745.

The spelling of 1025267121 in words is "one billion, twenty-five million, two hundred sixty-seven thousand, one hundred twenty-one".