25245132125 has 16 divisors (see below), whose sum is σ = 32022425136. Its totient is φ = 19865016000.

The previous prime is 25245132109. The next prime is 25245132127. The reversal of 25245132125 is 52123154252.

It can be written as a sum of positive squares in 8 ways, for example, as 11759884249 + 13485247876 = 108443^2 + 116126^2 .

It is not a de Polignac number, because 25245132125 - 2⁴ = 25245132109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25245132091 and 25245132100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25245132127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1647794 + ... + 1663043.

It is an arithmetic number, because the mean of its divisors is an integer number (2001401571).

Almost surely, 2^25245132125 is an apocalyptic number.

25245132125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25245132125 is a deficient number, since it is larger than the sum of its proper divisors (6777293011).

25245132125 is an equidigital number, since it uses as much as digits as its factorization.

25245132125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3310913 (or 3310903 counting only the distinct ones).

The product of its digits is 24000, while the sum is 32.

Adding to 25245132125 its reverse (52123154252), we get a palindrome (77368286377).

The spelling of 25245132125 in words is "twenty-five billion, two hundred forty-five million, one hundred thirty-two thousand, one hundred twenty-five".