1025321530 has 8 divisors (see below), whose sum is σ = 1845578772. Its totient is φ = 410128608.

The previous prime is 1025321519. The next prime is 1025321533. The reversal of 1025321530 is 351235201.

It can be written as a sum of positive squares in 2 ways, for example, as 1020227481 + 5094049 = 31941^2 + 2257^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1025321533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51266067 + ... + 51266086.

Almost surely, 2^1025321530 is an apocalyptic number.

1025321530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1025321530 is a deficient number, since it is larger than the sum of its proper divisors (820257242).

1025321530 is a wasteful number, since it uses less digits than its factorization.

1025321530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102532160.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 1025321530 is about 32020.6422483997. The cubic root of 1025321530 is about 1008.3702533818.

Adding to 1025321530 its reverse (351235201), we get a palindrome (1376556731).

The spelling of 1025321530 in words is "one billion, twenty-five million, three hundred twenty-one thousand, five hundred thirty".