1025320311 has 24 divisors (see below), whose sum is σ = 1493300016. Its totient is φ = 677900160.

The previous prime is 1025320297. The next prime is 1025320339. The reversal of 1025320311 is 1130235201.

1025320311 is a `hidden beast` number, since 10 + 25 + 320 + 311 = 666.

It is not a de Polignac number, because 1025320311 - 2²³ = 1016931703 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025320511) 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, 1075411 + ... + 1076363.

It is an arithmetic number, because the mean of its divisors is an integer number (62220834).

Almost surely, 2^1025320311 is an apocalyptic number.

1025320311 is a deficient number, since it is larger than the sum of its proper divisors (467979705).

1025320311 is a wasteful number, since it uses less digits than its factorization.

1025320311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1823 (or 1820 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1025320311 is about 32020.6232137977. The cubic root of 1025320311 is about 1008.3698537661.

Adding to 1025320311 its reverse (1130235201), we get a palindrome (2155555512).

The spelling of 1025320311 in words is "one billion, twenty-five million, three hundred twenty thousand, three hundred eleven".