20259318425 has 12 divisors (see below), whose sum is σ = 25171513920. Its totient is φ = 16175223120.

The previous prime is 20259318419. The next prime is 20259318509. The reversal of 20259318425 is 52481395202.

It is not a de Polignac number, because 20259318425 - 2⁸ = 20259318169 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 792965 + ... + 818114.

It is an arithmetic number, because the mean of its divisors is an integer number (2097626160).

Almost surely, 2^20259318425 is an apocalyptic number.

20259318425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20259318425 is a deficient number, since it is larger than the sum of its proper divisors (4912195495).

20259318425 is a wasteful number, since it uses less digits than its factorization.

20259318425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611592 (or 1611587 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 20259318425 in words is "twenty billion, two hundred fifty-nine million, three hundred eighteen thousand, four hundred twenty-five".