25244113405 has 16 divisors (see below), whose sum is σ = 34624491264. Its totient is φ = 17308252800.

The previous prime is 25244113397. The next prime is 25244113423. The reversal of 25244113405 is 50431144252.

It is not a de Polignac number, because 25244113405 - 2³ = 25244113397 is a prime.

It is a super-3 number, since 3×25244113405³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 307480 + ... + 380830.

It is an arithmetic number, because the mean of its divisors is an integer number (2164030704).

Almost surely, 2^25244113405 is an apocalyptic number.

It is an amenable number.

25244113405 is a deficient number, since it is larger than the sum of its proper divisors (9380377859).

25244113405 is an equidigital number, since it uses as much as digits as its factorization.

25244113405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83196.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 25244113405 its reverse (50431144252), we get a palindrome (75675257657).

The spelling of 25244113405 in words is "twenty-five billion, two hundred forty-four million, one hundred thirteen thousand, four hundred five".