25740920 has 16 divisors (see below), whose sum is σ = 57917160. Its totient is φ = 10296352.

The previous prime is 25740917. The next prime is 25740947. The reversal of 25740920 is 2904752.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321722 + ... + 321801.

Almost surely, 2^25740920 is an apocalyptic number.

25740920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25740920 is an abundant number, since it is smaller than the sum of its proper divisors (32176240).

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

25740920 is a wasteful number, since it uses less digits than its factorization.

25740920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643534 (or 643530 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 25740920 is about 5073.5510246769. The cubic root of 25740920 is about 295.2623157541.

The spelling of 25740920 in words is "twenty-five million, seven hundred forty thousand, nine hundred twenty".