25782020 has 24 divisors (see below), whose sum is σ = 59064768. Its totient is φ = 9375200.

The previous prime is 25782019. The next prime is 25782023. The reversal of 25782020 is 2028752.

It is not an unprimeable number, because it can be changed into a prime (25782023) 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, 58376 + ... + 58815.

It is an arithmetic number, because the mean of its divisors is an integer number (2461032).

Almost surely, 2^25782020 is an apocalyptic number.

25782020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25782020 is an abundant number, since it is smaller than the sum of its proper divisors (33282748).

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

25782020 is a wasteful number, since it uses less digits than its factorization.

25782020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117211 (or 117209 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 25782020 is about 5077.5998266898. The cubic root of 25782020 is about 295.4193786224.

The spelling of 25782020 in words is "twenty-five million, seven hundred eighty-two thousand, twenty".