1025142231305 has 8 divisors (see below), whose sum is σ = 1234051344072. Its totient is φ = 817526674048.

The previous prime is 1025142231299. The next prime is 1025142231307. The reversal of 1025142231305 is 5031322415201.

It can be written as a sum of positive squares in 4 ways, for example, as 33004715584 + 992137515721 = 181672^2 + 996061^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1025142231305 is a prime.

It is a super-3 number, since 3×1025142231305³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1025142231307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 323387132 + ... + 323390301.

It is an arithmetic number, because the mean of its divisors is an integer number (154256418009).

Almost surely, 2^{1025142231305} is an apocalyptic number.

It is an amenable number.

1025142231305 is a deficient number, since it is larger than the sum of its proper divisors (208909112767).

1025142231305 is an equidigital number, since it uses as much as digits as its factorization.

1025142231305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646777755.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 1025142231305 its reverse (5031322415201), we get a palindrome (6056464646506).

The spelling of 1025142231305 in words is "one trillion, twenty-five billion, one hundred forty-two million, two hundred thirty-one thousand, three hundred five".