20413402025 has 6 divisors (see below), whose sum is σ = 25312618542. Its totient is φ = 16330721600.

The previous prime is 20413401949. The next prime is 20413402067. The reversal of 20413402025 is 52020431402.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 709103641 + 19704298384 = 26629^2 + 140372^2 .

It is not a de Polignac number, because 20413402025 - 2¹² = 20413397929 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 408268016 + ... + 408268065.

It is an arithmetic number, because the mean of its divisors is an integer number (4218769757).

Almost surely, 2^20413402025 is an apocalyptic number.

20413402025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20413402025 is a deficient number, since it is larger than the sum of its proper divisors (4899216517).

20413402025 is an equidigital number, since it uses as much as digits as its factorization.

20413402025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816536091 (or 816536086 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 20413402025 its reverse (52020431402), we get a palindrome (72433833427).

The spelling of 20413402025 in words is "twenty billion, four hundred thirteen million, four hundred two thousand, twenty-five".