25783480 has 32 divisors (see below), whose sum is σ = 58969440. Its totient is φ = 10143360.

The previous prime is 25783463. The next prime is 25783507. The reversal of 25783480 is 8438752.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

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, 2844 + ... + 7723.

It is an arithmetic number, because the mean of its divisors is an integer number (1842795).

Almost surely, 2^25783480 is an apocalyptic number.

25783480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25783480 is an abundant number, since it is smaller than the sum of its proper divisors (33185960).

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

25783480 is a wasteful number, since it uses less digits than its factorization.

25783480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10639 (or 10635 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 25783480 is about 5077.7435933690. The cubic root of 25783480 is about 295.4249549135.

The spelling of 25783480 in words is "twenty-five million, seven hundred eighty-three thousand, four hundred eighty".