1625205053 has 4 divisors (see below), whose sum is σ = 1626024960. Its totient is φ = 1624385148.

The previous prime is 1625205041. The next prime is 1625205061. The reversal of 1625205053 is 3505025261.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 1625205053 - 2⁸ = 1625204797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1625255053) 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, 406973 + ... + 410946.

It is an arithmetic number, because the mean of its divisors is an integer number (406506240).

Almost surely, 2^1625205053 is an apocalyptic number.

It is an amenable number.

1625205053 is a deficient number, since it is larger than the sum of its proper divisors (819907).

1625205053 is an equidigital number, since it uses as much as digits as its factorization.

1625205053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819906.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 1625205053 is about 40313.8320307063. The cubic root of 1625205053 is about 1175.7167928812.

The spelling of 1625205053 in words is "one billion, six hundred twenty-five million, two hundred five thousand, fifty-three".