25002243625 has 16 divisors (see below), whose sum is σ = 31207896720. Its totient is φ = 19998528000.

The previous prime is 25002243613. The next prime is 25002243647. The reversal of 25002243625 is 52634220052.

It can be written as a sum of positive squares in 8 ways, for example, as 4154060304 + 20848183321 = 64452^2 + 144389^2 .

It is not a de Polignac number, because 25002243625 - 2¹¹ = 25002241577 is a prime.

It is a super-2 number, since 2×25002243625² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1007871 + ... + 1032379.

It is an arithmetic number, because the mean of its divisors is an integer number (1950493545).

Almost surely, 2^25002243625 is an apocalyptic number.

25002243625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25002243625 is a deficient number, since it is larger than the sum of its proper divisors (6205653095).

25002243625 is an equidigital number, since it uses as much as digits as its factorization.

25002243625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32685 (or 32675 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 25002243625 its reverse (52634220052), we get a palindrome (77636463677).

The spelling of 25002243625 in words is "twenty-five billion, two million, two hundred forty-three thousand, six hundred twenty-five".