25405413025 has 24 divisors (see below), whose sum is σ = 34005948480. Its totient is φ = 18770283840.

The previous prime is 25405412957. The next prime is 25405413091. The reversal of 25405413025 is 52031450452.

It is not a de Polignac number, because 25405413025 - 2¹¹ = 25405410977 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 745107 + ... + 778456.

It is an arithmetic number, because the mean of its divisors is an integer number (1416914520).

Almost surely, 2^25405413025 is an apocalyptic number.

25405413025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25405413025 is a deficient number, since it is larger than the sum of its proper divisors (8600535455).

25405413025 is a wasteful number, since it uses less digits than its factorization.

25405413025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1523625 (or 1523620 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 25405413025 its reverse (52031450452), we get a palindrome (77436863477).

The spelling of 25405413025 in words is "twenty-five billion, four hundred five million, four hundred thirteen thousand, twenty-five".