25408080 has 120 divisors (see below), whose sum is σ = 88556832. Its totient is φ = 6770304.

The previous prime is 25408079. The next prime is 25408087. The reversal of 25408080 is 8080452.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25408087) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18787 + ... + 20093.

Almost surely, 2^25408080 is an apocalyptic number.

25408080 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 25408080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44278416).

25408080 is an abundant number, since it is smaller than the sum of its proper divisors (63148752).

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

25408080 is a wasteful number, since it uses less digits than its factorization.

25408080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335 (or 1317 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 25408080 is about 5040.6428161495. The cubic root of 25408080 is about 293.9841724091.

The spelling of 25408080 in words is "twenty-five million, four hundred eight thousand, eighty".