25495780 has 24 divisors (see below), whose sum is σ = 53726400. Its totient is φ = 10163040.

The previous prime is 25495751. The next prime is 25495787. The reversal of 25495780 is 8759452.

It is not an unprimeable number, because it can be changed into a prime (25495787) 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, 4171 + ... + 8269.

It is an arithmetic number, because the mean of its divisors is an integer number (2238600).

Almost surely, 2^25495780 is an apocalyptic number.

25495780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25495780 is an abundant number, since it is smaller than the sum of its proper divisors (28230620).

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

25495780 is a wasteful number, since it uses less digits than its factorization.

25495780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4419 (or 4417 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 25495780 is about 5049.3346096293. The cubic root of 25495780 is about 294.3220282493.

The spelling of 25495780 in words is "twenty-five million, four hundred ninety-five thousand, seven hundred eighty".