1025305653 has 4 divisors (see below), whose sum is σ = 1367074208. Its totient is φ = 683537100.

The previous prime is 1025305637. The next prime is 1025305657. The reversal of 1025305653 is 3565035201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1025305653 - 2⁴ = 1025305637 is a prime.

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 1025305653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025305657) 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 3 ways as a sum of consecutive naturals, for example, 170884273 + ... + 170884278.

It is an arithmetic number, because the mean of its divisors is an integer number (341768552).

Almost surely, 2^1025305653 is an apocalyptic number.

It is an amenable number.

1025305653 is a deficient number, since it is larger than the sum of its proper divisors (341768555).

1025305653 is an equidigital number, since it uses as much as digits as its factorization.

1025305653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341768554.

The product of its (nonzero) digits is 13500, while the sum is 30.

The square root of 1025305653 is about 32020.3943292396. The cubic root of 1025305653 is about 1008.3650485179.

The spelling of 1025305653 in words is "one billion, twenty-five million, three hundred five thousand, six hundred fifty-three".