25016780 has 12 divisors (see below), whose sum is σ = 52535280. Its totient is φ = 10006704.

The previous prime is 25016777. The next prime is 25016807. The reversal of 25016780 is 8761052.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 625400 + ... + 625439.

It is an arithmetic number, because the mean of its divisors is an integer number (4377940).

Almost surely, 2^25016780 is an apocalyptic number.

25016780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25016780 is an abundant number, since it is smaller than the sum of its proper divisors (27518500).

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

25016780 is a wasteful number, since it uses less digits than its factorization.

25016780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250848 (or 1250846 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 25016780 is about 5001.6777185261. The cubic root of 25016780 is about 292.4671792136.

The spelling of 25016780 in words is "twenty-five million, sixteen thousand, seven hundred eighty".