25436504325 has 48 divisors (see below), whose sum is σ = 42609504960. Its totient is φ = 13388267520.

The previous prime is 25436504251. The next prime is 25436504329. The reversal of 25436504325 is 52340563452.

It is not a de Polignac number, because 25436504325 - 2⁸ = 25436504069 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25436504329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2094922 + ... + 2107028.

It is an arithmetic number, because the mean of its divisors is an integer number (887698020).

Almost surely, 2^25436504325 is an apocalyptic number.

25436504325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25436504325 is a deficient number, since it is larger than the sum of its proper divisors (17173000635).

25436504325 is a wasteful number, since it uses less digits than its factorization.

25436504325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12486 (or 12481 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 39.

The spelling of 25436504325 in words is "twenty-five billion, four hundred thirty-six million, five hundred four thousand, three hundred twenty-five".