25685375 has 8 divisors (see below), whose sum is σ = 32055504. Its totient is φ = 20548200.

The previous prime is 25685371. The next prime is 25685399. The reversal of 25685375 is 57358652.

It is not a de Polignac number, because 25685375 - 2² = 25685371 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25685371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102617 + ... + 102866.

It is an arithmetic number, because the mean of its divisors is an integer number (4006938).

Almost surely, 2^25685375 is an apocalyptic number.

25685375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25685375 is a deficient number, since it is larger than the sum of its proper divisors (6370129).

25685375 is an equidigital number, since it uses as much as digits as its factorization.

25685375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205498 (or 205488 counting only the distinct ones).

The product of its digits is 252000, while the sum is 41.

The square root of 25685375 is about 5068.0740918025. The cubic root of 25685375 is about 295.0497857179.

The spelling of 25685375 in words is "twenty-five million, six hundred eighty-five thousand, three hundred seventy-five".