1025604340 has 24 divisors (see below), whose sum is σ = 2206301832. Its totient is φ = 400235520.

The previous prime is 1025604319. The next prime is 1025604347. The reversal of 1025604340 is 434065201.

It can be written as a sum of positive squares in 4 ways, for example, as 4418404 + 1021185936 = 2102^2 + 31956^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025604347) 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 7 ways as a sum of consecutive naturals, for example, 624549 + ... + 626188.

It is an arithmetic number, because the mean of its divisors is an integer number (91929243).

Almost surely, 2^1025604340 is an apocalyptic number.

1025604340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1025604340 is an abundant number, since it is smaller than the sum of its proper divisors (1180697492).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1025604340 is a wasteful number, since it uses less digits than its factorization.

1025604340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250787 (or 1250785 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1025604340 is about 32025.0580015088. The cubic root of 1025604340 is about 1008.4629563266.

Adding to 1025604340 its reverse (434065201), we get a palindrome (1459669541).

The spelling of 1025604340 in words is "one billion, twenty-five million, six hundred four thousand, three hundred forty".