25043620 has 48 divisors (see below), whose sum is σ = 61584768. Its totient is φ = 8375040.

The previous prime is 25043609. The next prime is 25043639. The reversal of 25043620 is 2634052.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25043591 and 25043600.

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, 3559 + ... + 7921.

It is an arithmetic number, because the mean of its divisors is an integer number (1283016).

Almost surely, 2^25043620 is an apocalyptic number.

25043620 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 25043620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30792384).

25043620 is an abundant number, since it is smaller than the sum of its proper divisors (36541148).

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

25043620 is a wasteful number, since it uses less digits than its factorization.

25043620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4420 (or 4418 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 25043620 is about 5004.3600989537. The cubic root of 25043620 is about 292.5717358813.

Adding to 25043620 its reverse (2634052), we get a palindrome (27677672).

The spelling of 25043620 in words is "twenty-five million, forty-three thousand, six hundred twenty".