25425636 has 12 divisors (see below), whose sum is σ = 59326512. Its totient is φ = 8475208.

The previous prime is 25425581. The next prime is 25425671. The reversal of 25425636 is 63652452.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×25425636³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25425597 and 25425606.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1059390 + ... + 1059413.

It is an arithmetic number, because the mean of its divisors is an integer number (4943876).

Almost surely, 2^25425636 is an apocalyptic number.

It is an amenable number.

25425636 is an abundant number, since it is smaller than the sum of its proper divisors (33900876).

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

25425636 is a wasteful number, since it uses less digits than its factorization.

25425636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2118810 (or 2118808 counting only the distinct ones).

The product of its digits is 43200, while the sum is 33.

The square root of 25425636 is about 5042.3839599935. The cubic root of 25425636 is about 294.0518673820.

The spelling of 25425636 in words is "twenty-five million, four hundred twenty-five thousand, six hundred thirty-six".