25670385 has 32 divisors (see below), whose sum is σ = 49150080. Its totient is φ = 12636864.

The previous prime is 25670363. The next prime is 25670389. The reversal of 25670385 is 58307652.

It is not a de Polignac number, because 25670385 - 2⁵ = 25670353 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25670389) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5559 + ... + 9068.

It is an arithmetic number, because the mean of its divisors is an integer number (1535940).

Almost surely, 2^25670385 is an apocalyptic number.

It is an amenable number.

25670385 is a deficient number, since it is larger than the sum of its proper divisors (23479695).

25670385 is a wasteful number, since it uses less digits than its factorization.

25670385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14654 (or 14648 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 25670385 is about 5066.5950104582. The cubic root of 25670385 is about 294.9923774723.

The spelling of 25670385 in words is "twenty-five million, six hundred seventy thousand, three hundred eighty-five".