1025344413 has 20 divisors (see below), whose sum is σ = 1560593628. Its totient is φ = 670662720.

The previous prime is 1025344403. The next prime is 1025344427. The reversal of 1025344413 is 3144435201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 420332004 + 605012409 = 20502^2 + 24597^2 .

It is not a de Polignac number, because 1025344413 - 2²⁰ = 1024295837 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025344403) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 115128 + ... + 123713.

Almost surely, 2^1025344413 is an apocalyptic number.

It is an amenable number.

1025344413 is a deficient number, since it is larger than the sum of its proper divisors (535249215).

1025344413 is an equidigital number, since it uses as much as digits as its factorization.

1025344413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238906 (or 238897 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 1025344413 is about 32020.9995627869. Note that the first 3 decimals coincide. The cubic root of 1025344413 is about 1008.3777548872.

Adding to 1025344413 its reverse (3144435201), we get a palindrome (4169779614).

The spelling of 1025344413 in words is "one billion, twenty-five million, three hundred forty-four thousand, four hundred thirteen".