1025235253121 has 4 divisors (see below), whose sum is σ = 1050240991044. Its totient is φ = 1000229515200.

The previous prime is 1025235253099. The next prime is 1025235253157. The reversal of 1025235253121 is 1213525325201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 57984640000 + 967250613121 = 240800^2 + 983489^2 .

It is a cyclic number.

It is not a de Polignac number, because 1025235253121 - 2¹⁸ = 1025234990977 is a prime.

It is a super-2 number, since 2×1025235253121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1025235259121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12502868900 + ... + 12502868981.

It is an arithmetic number, because the mean of its divisors is an integer number (262560247761).

Almost surely, 2^{1025235253121} is an apocalyptic number.

It is an amenable number.

1025235253121 is a deficient number, since it is larger than the sum of its proper divisors (25005737923).

1025235253121 is an equidigital number, since it uses as much as digits as its factorization.

1025235253121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25005737922.

The product of its (nonzero) digits is 18000, while the sum is 32.

The spelling of 1025235253121 in words is "one trillion, twenty-five billion, two hundred thirty-five million, two hundred fifty-three thousand, one hundred twenty-one".