25667430 has 16 divisors (see below), whose sum is σ = 61601904. Its totient is φ = 6844640.

The previous prime is 25667417. The next prime is 25667437. The reversal of 25667430 is 3476652.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25667391 and 25667400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25667437) 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, 427761 + ... + 427820.

It is an arithmetic number, because the mean of its divisors is an integer number (3850119).

Almost surely, 2^25667430 is an apocalyptic number.

25667430 is an abundant number, since it is smaller than the sum of its proper divisors (35934474).

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

25667430 is a wasteful number, since it uses less digits than its factorization.

25667430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855591.

The product of its (nonzero) digits is 30240, while the sum is 33.

The square root of 25667430 is about 5066.3033860992. The cubic root of 25667430 is about 294.9810578664.

The spelling of 25667430 in words is "twenty-five million, six hundred sixty-seven thousand, four hundred thirty".