1031520425 has 24 divisors (see below), whose sum is σ = 1380078336. Its totient is φ = 760299840.

The previous prime is 1031520419. The next prime is 1031520433. The reversal of 1031520425 is 5240251301.

It is not a de Polignac number, because 1031520425 - 2²² = 1027326121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1031520425.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 188072 + ... + 193478.

It is an arithmetic number, because the mean of its divisors is an integer number (57503264).

Almost surely, 2^1031520425 is an apocalyptic number.

It is an amenable number.

1031520425 is a deficient number, since it is larger than the sum of its proper divisors (348557911).

1031520425 is a wasteful number, since it uses less digits than its factorization.

1031520425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6017 (or 6012 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1031520425 is about 32117.2916822076. The cubic root of 1031520425 is about 1010.3983087370.

Adding to 1031520425 its reverse (5240251301), we get a palindrome (6271771726).

The spelling of 1031520425 in words is "one billion, thirty-one million, five hundred twenty thousand, four hundred twenty-five".