25483640 has 64 divisors (see below), whose sum is σ = 70580160. Its totient is φ = 8064000.

The previous prime is 25483621. The next prime is 25483657. The reversal of 25483640 is 4638452.

It is a junction number, because it is equal to n+sod(n) for n = 25483597 and 25483606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140 + ... + 7140.

It is an arithmetic number, because the mean of its divisors is an integer number (1102815).

Almost surely, 2^25483640 is an apocalyptic number.

25483640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25483640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35290080).

25483640 is an abundant number, since it is smaller than the sum of its proper divisors (45096520).

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

25483640 is a wasteful number, since it uses less digits than its factorization.

25483640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7032 (or 7028 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 25483640 is about 5048.1323279011. The cubic root of 25483640 is about 294.2753063122.

The spelling of 25483640 in words is "twenty-five million, four hundred eighty-three thousand, six hundred forty".