25027780 has 24 divisors (see below), whose sum is σ = 52859520. Its totient is φ = 9953760.

The previous prime is 25027759. The next prime is 25027787. The reversal of 25027780 is 8772052.

It is not an unprimeable number, because it can be changed into a prime (25027787) 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, 85 + ... + 7075.

It is an arithmetic number, because the mean of its divisors is an integer number (2202480).

Almost surely, 2^25027780 is an apocalyptic number.

25027780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25027780 is an abundant number, since it is smaller than the sum of its proper divisors (27831740).

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

25027780 is a wasteful number, since it uses less digits than its factorization.

25027780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7179 (or 7177 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 25027780 is about 5002.7772287001. Note that the first 3 decimals coincide. The cubic root of 25027780 is about 292.5100393467.

The spelling of 25027780 in words is "twenty-five million, twenty-seven thousand, seven hundred eighty".