25740420 has 24 divisors (see below), whose sum is σ = 72073344. Its totient is φ = 6864096.

The previous prime is 25740413. The next prime is 25740433. The reversal of 25740420 is 2404752.

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, 214444 + ... + 214563.

It is an arithmetic number, because the mean of its divisors is an integer number (3003056).

Almost surely, 2^25740420 is an apocalyptic number.

25740420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25740420 is an abundant number, since it is smaller than the sum of its proper divisors (46332924).

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

25740420 is a wasteful number, since it uses less digits than its factorization.

25740420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429019 (or 429017 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 25740420 is about 5073.5017492852. The cubic root of 25740420 is about 295.2604039846.

The spelling of 25740420 in words is "twenty-five million, seven hundred forty thousand, four hundred twenty".