25606428 has 24 divisors (see below), whose sum is σ = 60506880. Its totient is φ = 8427120.

The previous prime is 25606423. The next prime is 25606463. The reversal of 25606428 is 82460652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25606423) 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, 12558 + ... + 14453.

It is an arithmetic number, because the mean of its divisors is an integer number (2521120).

Almost surely, 2^25606428 is an apocalyptic number.

It is an amenable number.

25606428 is an abundant number, since it is smaller than the sum of its proper divisors (34900452).

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

25606428 is a wasteful number, since it uses less digits than its factorization.

25606428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27097 (or 27095 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 25606428 is about 5060.2794389243. The cubic root of 25606428 is about 294.7471854878.

The spelling of 25606428 in words is "twenty-five million, six hundred six thousand, four hundred twenty-eight".