1025142231321 has 24 divisors (see below), whose sum is σ = 1601337978240. Its totient is φ = 628217172576.

The previous prime is 1025142231307. The next prime is 1025142231329. The reversal of 1025142231321 is 1231322415201.

It is a happy number.

1025142231321 is a `hidden beast` number, since 10 + 2 + 514 + 2 + 2 + 3 + 132 + 1 = 666.

It is not a de Polignac number, because 1025142231321 - 2¹⁹ = 1025141707033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1025142231329) 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, 18302371 + ... + 18358296.

It is an arithmetic number, because the mean of its divisors is an integer number (66722415760).

Almost surely, 2^{1025142231321} is an apocalyptic number.

It is an amenable number.

1025142231321 is a deficient number, since it is larger than the sum of its proper divisors (576195746919).

1025142231321 is a wasteful number, since it uses less digits than its factorization.

1025142231321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36660925 (or 36660922 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 1025142231321 its reverse (1231322415201), we get a palindrome (2256464646522).

The spelling of 1025142231321 in words is "one trillion, twenty-five billion, one hundred forty-two million, two hundred thirty-one thousand, three hundred twenty-one".