25253252425 has 12 divisors (see below), whose sum is σ = 31539318160. Its totient is φ = 20057256720.

The previous prime is 25253252419. The next prime is 25253252447. The reversal of 25253252425 is 52425235252.

It is not a de Polignac number, because 25253252425 - 2²¹ = 25251155273 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3630087 + ... + 3637036.

Almost surely, 2^25253252425 is an apocalyptic number.

25253252425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25253252425 is a deficient number, since it is larger than the sum of its proper divisors (6286065735).

25253252425 is a wasteful number, since it uses less digits than its factorization.

25253252425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7267272 (or 7267267 counting only the distinct ones).

The product of its digits is 240000, while the sum is 37.

Adding to 25253252425 its reverse (52425235252), we get a palindrome (77678487677).

The spelling of 25253252425 in words is "twenty-five billion, two hundred fifty-three million, two hundred fifty-two thousand, four hundred twenty-five".