25305531125 has 16 divisors (see below), whose sum is σ = 36092918784. Its totient is φ = 17352363600.

The previous prime is 25305531107. The next prime is 25305531133. The reversal of 25305531125 is 52113550352.

It is not a de Polignac number, because 25305531125 - 2¹² = 25305527029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25305531091 and 25305531100.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 14459429 + ... + 14461178.

It is an arithmetic number, because the mean of its divisors is an integer number (2255807424).

Almost surely, 2^25305531125 is an apocalyptic number.

25305531125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25305531125 is a deficient number, since it is larger than the sum of its proper divisors (10787387659).

25305531125 is an equidigital number, since it uses as much as digits as its factorization.

25305531125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28920629 (or 28920619 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 32.

The spelling of 25305531125 in words is "twenty-five billion, three hundred five million, five hundred thirty-one thousand, one hundred twenty-five".