25487790 has 16 divisors (see below), whose sum is σ = 61170768. Its totient is φ = 6796736.

The previous prime is 25487789. The next prime is 25487827. The reversal of 25487790 is 9778452.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 424767 + ... + 424826.

It is an arithmetic number, because the mean of its divisors is an integer number (3823173).

Almost surely, 2^25487790 is an apocalyptic number.

25487790 is an abundant number, since it is smaller than the sum of its proper divisors (35682978).

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

25487790 is a wasteful number, since it uses less digits than its factorization.

25487790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849603.

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 25487790 is about 5048.5433542756. The cubic root of 25487790 is about 294.2912796482.

The spelling of 25487790 in words is "twenty-five million, four hundred eighty-seven thousand, seven hundred ninety".