25044312530 has 32 divisors (see below), whose sum is σ = 45817999920. Its totient is φ = 9854817280.

The previous prime is 25044312523. The next prime is 25044312541. The reversal of 25044312530 is 3521344052.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 7789651081 + 17254661449 = 88259^2 + 131357^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25044312493 and 25044312502.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 103910 + ... + 246750.

Almost surely, 2^25044312530 is an apocalyptic number.

25044312530 is a deficient number, since it is larger than the sum of its proper divisors (20773687390).

25044312530 is a wasteful number, since it uses less digits than its factorization.

25044312530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143134.

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 25044312530 its reverse (3521344052), we get a palindrome (28565656582).

The spelling of 25044312530 in words is "twenty-five billion, forty-four million, three hundred twelve thousand, five hundred thirty".