25417625 has 8 divisors (see below), whose sum is σ = 31721352. Its totient is φ = 20334000.

The previous prime is 25417607. The next prime is 25417633. The reversal of 25417625 is 52671452.

It can be written as a sum of positive squares in 4 ways, for example, as 337561 + 25080064 = 581^2 + 5008^2 .

It is not a de Polignac number, because 25417625 - 2²⁴ = 8640409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25417591 and 25417600.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101546 + ... + 101795.

It is an arithmetic number, because the mean of its divisors is an integer number (3965169).

Almost surely, 2^25417625 is an apocalyptic number.

25417625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25417625 is a deficient number, since it is larger than the sum of its proper divisors (6303727).

25417625 is an equidigital number, since it uses as much as digits as its factorization.

25417625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203356 (or 203346 counting only the distinct ones).

The product of its digits is 16800, while the sum is 32.

The square root of 25417625 is about 5041.5895310904. The cubic root of 25417625 is about 294.0209812722.

The spelling of 25417625 in words is "twenty-five million, four hundred seventeen thousand, six hundred twenty-five".