1025044331 has 4 divisors (see below), whose sum is σ = 1025141832. Its totient is φ = 1024946832.

The previous prime is 1025044313. The next prime is 1025044333. The reversal of 1025044331 is 1334405201.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1334405201 = 1627 ⋅820163.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1025044331 is a prime.

It is a super-2 number, since 2×1025044331² = 2101431761030475122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1025044297 and 1025044306.

It is not an unprimeable number, because it can be changed into a prime (1025044333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30770 + ... + 54743.

It is an arithmetic number, because the mean of its divisors is an integer number (256285458).

Almost surely, 2^1025044331 is an apocalyptic number.

1025044331 is a deficient number, since it is larger than the sum of its proper divisors (97501).

1025044331 is an equidigital number, since it uses as much as digits as its factorization.

1025044331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97500.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1025044331 is about 32016.3135135824. The cubic root of 1025044331 is about 1008.2793731356.

Adding to 1025044331 its reverse (1334405201), we get a palindrome (2359449532).

The spelling of 1025044331 in words is "one billion, twenty-five million, forty-four thousand, three hundred thirty-one".