25129916 has 12 divisors (see below), whose sum is σ = 50259888. Its totient is φ = 10769952.

The previous prime is 25129903. The next prime is 25129939. The reversal of 25129916 is 61992152.

25129916 is an admirable number.

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, 448721 + ... + 448776.

It is an arithmetic number, because the mean of its divisors is an integer number (4188324).

Almost surely, 2^25129916 is an apocalyptic number.

It is an amenable number.

25129916 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

25129916 is a wasteful number, since it uses less digits than its factorization.

25129916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897508 (or 897506 counting only the distinct ones).

The product of its digits is 9720, while the sum is 35.

The square root of 25129916 is about 5012.9747655459. The cubic root of 25129916 is about 292.9074012269.

The spelling of 25129916 in words is "twenty-five million, one hundred twenty-nine thousand, nine hundred sixteen".