25582780 has 24 divisors (see below), whose sum is σ = 54281808. Its totient is φ = 10126848.

The previous prime is 25582771. The next prime is 25582787. The reversal of 25582780 is 8728552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25582787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4654 + ... + 8533.

It is an arithmetic number, because the mean of its divisors is an integer number (2261742).

Almost surely, 2^25582780 is an apocalyptic number.

25582780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25582780 is an abundant number, since it is smaller than the sum of its proper divisors (28699028).

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

25582780 is a wasteful number, since it uses less digits than its factorization.

25582780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13293 (or 13291 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 37.

The square root of 25582780 is about 5057.9422693423. The cubic root of 25582780 is about 294.6564227538.

It can be divided in two parts, 25582 and 780, that added together give a palindrome (26362).

The spelling of 25582780 in words is "twenty-five million, five hundred eighty-two thousand, seven hundred eighty".