25685430 has 16 divisors (see below), whose sum is σ = 61645104. Its totient is φ = 6849440.

The previous prime is 25685399. The next prime is 25685431. The reversal of 25685430 is 3458652.

It is a junction number, because it is equal to n+sod(n) for n = 25685391 and 25685400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25685431) 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, 428061 + ... + 428120.

It is an arithmetic number, because the mean of its divisors is an integer number (3852819).

Almost surely, 2^25685430 is an apocalyptic number.

25685430 is an abundant number, since it is smaller than the sum of its proper divisors (35959674).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25685430 is a wasteful number, since it uses less digits than its factorization.

25685430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856191.

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 25685430 is about 5068.0795179239. The cubic root of 25685430 is about 295.0499963141.

The spelling of 25685430 in words is "twenty-five million, six hundred eighty-five thousand, four hundred thirty".