1025351131021 has 24 divisors (see below), whose sum is σ = 1246548890880. Its totient is φ = 826022399232.

The previous prime is 1025351131009. The next prime is 1025351131033. The reversal of 1025351131021 is 1201311535201.

It is an interprime number because it is at equal distance from previous prime (1025351131009) and next prime (1025351131033).

It is not a de Polignac number, because 1025351131021 - 2¹¹ = 1025351128973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025351131001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1102071 + ... + 1807003.

It is an arithmetic number, because the mean of its divisors is an integer number (51939537120).

Almost surely, 2^{1025351131021} is an apocalyptic number.

It is an amenable number.

1025351131021 is a deficient number, since it is larger than the sum of its proper divisors (221197759859).

1025351131021 is an equidigital number, since it uses as much as digits as its factorization.

1025351131021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705693 (or 705676 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 25.

Adding to 1025351131021 its reverse (1201311535201), we get a palindrome (2226662666222).

The spelling of 1025351131021 in words is "one trillion, twenty-five billion, three hundred fifty-one million, one hundred thirty-one thousand, twenty-one".