25623406 has 4 divisors (see below), whose sum is σ = 38435112. Its totient is φ = 12811702.

The previous prime is 25623373. The next prime is 25623407. The reversal of 25623406 is 60432652.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25623407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6405850 + ... + 6405853.

It is an arithmetic number, because the mean of its divisors is an integer number (9608778).

Almost surely, 2^25623406 is an apocalyptic number.

25623406 is a deficient number, since it is larger than the sum of its proper divisors (12811706).

25623406 is a wasteful number, since it uses less digits than its factorization.

25623406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12811705.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 25623406 is about 5061.9567362829. The cubic root of 25623406 is about 294.8123138237.

The spelling of 25623406 in words is "twenty-five million, six hundred twenty-three thousand, four hundred six".