1031513425 has 6 divisors (see below), whose sum is σ = 1279076678. Its totient is φ = 825210720.

The previous prime is 1031513411. The next prime is 1031513501. The reversal of 1031513425 is 5243151301.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 324432144 + 707081281 = 18012^2 + 26591^2 .

It is not a de Polignac number, because 1031513425 - 2⁹ = 1031512913 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 41260537 = 1031513425 / (1 + 0 + 3 + 1 + 5 + 1 + 3 + 4 + 2 + 5).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1031513425.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20630244 + ... + 20630293.

Almost surely, 2^1031513425 is an apocalyptic number.

It is an amenable number.

1031513425 is a deficient number, since it is larger than the sum of its proper divisors (247563253).

1031513425 is an equidigital number, since it uses as much as digits as its factorization.

1031513425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41260547 (or 41260542 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1031513425 is about 32117.1827064579. The cubic root of 1031513425 is about 1010.3960231774.

Adding to 1031513425 its reverse (5243151301), we get a palindrome (6274664726).

The spelling of 1031513425 in words is "one billion, thirty-one million, five hundred thirteen thousand, four hundred twenty-five".