25192890 has 32 divisors (see below), whose sum is σ = 67181760. Its totient is φ = 6718032.

The previous prime is 25192877. The next prime is 25192891. The reversal of 25192890 is 9829152.

It is not an unprimeable number, because it can be changed into a prime (25192891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46384 + ... + 46923.

It is an arithmetic number, because the mean of its divisors is an integer number (2099430).

Almost surely, 2^25192890 is an apocalyptic number.

25192890 is an abundant number, since it is smaller than the sum of its proper divisors (41988870).

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

25192890 is a wasteful number, since it uses less digits than its factorization.

25192890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93323 (or 93317 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 25192890 is about 5019.2519362949. The cubic root of 25192890 is about 293.1518663536.

The spelling of 25192890 in words is "twenty-five million, one hundred ninety-two thousand, eight hundred ninety".