25810800425 has 6 divisors (see below), whose sum is σ = 32005392558. Its totient is φ = 20648640320.

The previous prime is 25810800413. The next prime is 25810800481. The reversal of 25810800425 is 52400801852.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 6077293849 + 19733506576 = 77957^2 + 140476^2 .

It is a de Polignac number, because none of the positive numbers 2^k-25810800425 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, 516215984 + ... + 516216033.

It is an arithmetic number, because the mean of its divisors is an integer number (5334232093).

Almost surely, 2^25810800425 is an apocalyptic number.

25810800425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25810800425 is a deficient number, since it is larger than the sum of its proper divisors (6194592133).

25810800425 is a wasteful number, since it uses less digits than its factorization.

25810800425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032432027 (or 1032432022 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 35.

The spelling of 25810800425 in words is "twenty-five billion, eight hundred ten million, eight hundred thousand, four hundred twenty-five".