1025235259121 has 2 divisors, whose sum is σ = 1025235259122. Its totient is φ = 1025235259120.

The previous prime is 1025235259067. The next prime is 1025235259133. The reversal of 1025235259121 is 1219525325201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 827210259121 + 198025000000 = 909511^2 + 445000^2 .

It is a cyclic number.

It is not a de Polignac number, because 1025235259121 - 2²⁶ = 1025168150257 is a prime.

It is a super-2 number, since 2×1025235259121² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1025235259151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512617629560 + 512617629561.

It is an arithmetic number, because the mean of its divisors is an integer number (512617629561).

Almost surely, 2^{1025235259121} is an apocalyptic number.

It is an amenable number.

1025235259121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1025235259121 is an equidigital number, since it uses as much as digits as its factorization.

1025235259121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54000, while the sum is 38.

The spelling of 1025235259121 in words is "one trillion, twenty-five billion, two hundred thirty-five million, two hundred fifty-nine thousand, one hundred twenty-one".