25400305425 has 48 divisors (see below), whose sum is σ = 46233380160. Its totient is φ = 12202272000.

The previous prime is 25400305423. The next prime is 25400305471. The reversal of 25400305425 is 52450300452.

It is not a de Polignac number, because 25400305425 - 2¹ = 25400305423 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25400305392 and 25400305401.

It is not an unprimeable number, because it can be changed into a prime (25400305423) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 51306 + ... + 231155.

It is an arithmetic number, because the mean of its divisors is an integer number (963195420).

Almost surely, 2^25400305425 is an apocalyptic number.

25400305425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25400305425 is a deficient number, since it is larger than the sum of its proper divisors (20833074735).

25400305425 is a wasteful number, since it uses less digits than its factorization.

25400305425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282594 (or 282589 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 30.

Adding to 25400305425 its reverse (52450300452), we get a palindrome (77850605877).

The spelling of 25400305425 in words is "twenty-five billion, four hundred million, three hundred five thousand, four hundred twenty-five".