25230040 has 64 divisors (see below), whose sum is σ = 65590560. Its totient is φ = 8632320.

The previous prime is 25230017. The next prime is 25230059. The reversal of 25230040 is 4003252.

It is a junction number, because it is equal to n+sod(n) for n = 25229996 and 25230023.

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, 5794 + ... + 9166.

Almost surely, 2^25230040 is an apocalyptic number.

25230040 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 25230040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32795280).

25230040 is an abundant number, since it is smaller than the sum of its proper divisors (40360520).

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

25230040 is a wasteful number, since it uses less digits than its factorization.

25230040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3412 (or 3408 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 25230040 is about 5022.9513236742. The cubic root of 25230040 is about 293.2958916857.

Adding to 25230040 its reverse (4003252), we get a palindrome (29233292).

The spelling of 25230040 in words is "twenty-five million, two hundred thirty thousand, forty".