20454501425 has 6 divisors (see below), whose sum is σ = 25363581798. Its totient is φ = 16363601120.

The previous prime is 20454501421. The next prime is 20454501467. The reversal of 20454501425 is 52410545402.

It can be written as a sum of positive squares in 3 ways, for example, as 3852436624 + 16602064801 = 62068^2 + 128849^2 .

It is not a de Polignac number, because 20454501425 - 2² = 20454501421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20454501391 and 20454501400.

It is not an unprimeable number, because it can be changed into a prime (20454501421) 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 5 ways as a sum of consecutive naturals, for example, 409090004 + ... + 409090053.

It is an arithmetic number, because the mean of its divisors is an integer number (4227263633).

Almost surely, 2^20454501425 is an apocalyptic number.

20454501425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20454501425 is a deficient number, since it is larger than the sum of its proper divisors (4909080373).

20454501425 is an equidigital number, since it uses as much as digits as its factorization.

20454501425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818180067 (or 818180062 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 32.

The spelling of 20454501425 in words is "twenty billion, four hundred fifty-four million, five hundred one thousand, four hundred twenty-five".