25134001225 has 12 divisors (see below), whose sum is σ = 31191808284. Its totient is φ = 20090654720.

The previous prime is 25134001199. The next prime is 25134001229. The reversal of 25134001225 is 52210043152.

It can be written as a sum of positive squares in 6 ways, for example, as 5592197961 + 19541803264 = 74781^2 + 139792^2 .

It is a de Polignac number, because none of the positive numbers 2^k-25134001225 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25134001225.

It is not an unprimeable number, because it can be changed into a prime (25134001229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 382624 + ... + 443473.

It is an arithmetic number, because the mean of its divisors is an integer number (2599317357).

Almost surely, 2^25134001225 is an apocalyptic number.

25134001225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25134001225 is a deficient number, since it is larger than the sum of its proper divisors (6057807059).

25134001225 is a wasteful number, since it uses less digits than its factorization.

25134001225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827324 (or 827319 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 25134001225 its reverse (52210043152), we get a palindrome (77344044377).

The spelling of 25134001225 in words is "twenty-five billion, one hundred thirty-four million, one thousand, two hundred twenty-five".