25252224425 has 24 divisors (see below), whose sum is σ = 31499796384. Its totient is φ = 20081468160.

The previous prime is 25252224397. The next prime is 25252224427. The reversal of 25252224425 is 52442225252.

It is not a de Polignac number, because 25252224425 - 2¹⁴ = 25252208041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25252224427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3059354 + ... + 3067596.

It is an arithmetic number, because the mean of its divisors is an integer number (1312491516).

Almost surely, 2^25252224425 is an apocalyptic number.

25252224425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25252224425 is a deficient number, since it is larger than the sum of its proper divisors (6247571959).

25252224425 is a wasteful number, since it uses less digits than its factorization.

25252224425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8969 (or 8964 counting only the distinct ones).

The product of its digits is 128000, while the sum is 35.

Adding to 25252224425 its reverse (52442225252), we get a palindrome (77694449677).

The spelling of 25252224425 in words is "twenty-five billion, two hundred fifty-two million, two hundred twenty-four thousand, four hundred twenty-five".