25430880 has 48 divisors (see below), whose sum is σ = 80108784. Its totient is φ = 6781440.

The previous prime is 25430863. The next prime is 25430887. The reversal of 25430880 is 8803452.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25430887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26011 + ... + 26970.

It is an arithmetic number, because the mean of its divisors is an integer number (1668933).

Almost surely, 2^25430880 is an apocalyptic number.

25430880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25430880 is an abundant number, since it is smaller than the sum of its proper divisors (54677904).

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

25430880 is a wasteful number, since it uses less digits than its factorization.

25430880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52999 (or 52991 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 25430880 is about 5042.9039253192. The cubic root of 25430880 is about 294.0720819139.

The spelling of 25430880 in words is "twenty-five million, four hundred thirty thousand, eight hundred eighty".