25669375425 has 18 divisors (see below), whose sum is σ = 45976703942. Its totient is φ = 13690333440.

The previous prime is 25669375409. The next prime is 25669375427. The reversal of 25669375425 is 52457396652.

It is a happy number.

25669375425 is a `hidden beast` number, since 2 + 5 + 6 + 6 + 93 + 7 + 542 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 2855085489 + 22814289936 = 53433^2 + 151044^2 .

It is not a de Polignac number, because 25669375425 - 2⁴ = 25669375409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25669375427) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 57042832 + ... + 57043281.

Almost surely, 2^25669375425 is an apocalyptic number.

25669375425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25669375425 is a deficient number, since it is larger than the sum of its proper divisors (20307328517).

25669375425 is a wasteful number, since it uses less digits than its factorization.

25669375425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114086129 (or 114086121 counting only the distinct ones).

The product of its digits is 13608000, while the sum is 54.

The spelling of 25669375425 in words is "twenty-five billion, six hundred sixty-nine million, three hundred seventy-five thousand, four hundred twenty-five".