25430480 has 40 divisors (see below), whose sum is σ = 59615232. Its totient is φ = 10088064.

The previous prime is 25430459. The next prime is 25430491. The reversal of 25430480 is 8403452.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8909 + ... + 11411.

Almost surely, 2^25430480 is an apocalyptic number.

25430480 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 25430480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29807616).

25430480 is an abundant number, since it is smaller than the sum of its proper divisors (34184752).

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

25430480 is a wasteful number, since it uses less digits than its factorization.

25430480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2643 (or 2637 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 25430480 is about 5042.8642654745. The cubic root of 25430480 is about 294.0705400948.

The spelling of 25430480 in words is "twenty-five million, four hundred thirty thousand, four hundred eighty".