25765420 has 48 divisors (see below), whose sum is σ = 55883520. Its totient is φ = 9974016.

The previous prime is 25765393. The next prime is 25765459. The reversal of 25765420 is 2456752.

It is a nialpdrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115429 + ... + 115651.

It is an arithmetic number, because the mean of its divisors is an integer number (1164240).

Almost surely, 2^25765420 is an apocalyptic number.

25765420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25765420 is an abundant number, since it is smaller than the sum of its proper divisors (30118100).

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

25765420 is a wasteful number, since it uses less digits than its factorization.

25765420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 392 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 25765420 is about 5075.9649328970. The cubic root of 25765420 is about 295.3559621465.

The spelling of 25765420 in words is "twenty-five million, seven hundred sixty-five thousand, four hundred twenty".