25490196 has 18 divisors (see below), whose sum is σ = 64433642. Its totient is φ = 8496720.

The previous prime is 25490177. The next prime is 25490221. The reversal of 25490196 is 69109452.

It can be written as a sum of positive squares in only one way, i.e., 13793796 + 11696400 = 3714^2 + 3420^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 708061 = 25490196 / (2 + 5 + 4 + 9 + 0 + 1 + 9 + 6).

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 25490196.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 353995 + ... + 354066.

Almost surely, 2^25490196 is an apocalyptic number.

It is an amenable number.

25490196 is an abundant number, since it is smaller than the sum of its proper divisors (38943446).

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

25490196 is a wasteful number, since it uses less digits than its factorization.

25490196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708071 (or 708066 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 25490196 is about 5048.7816352067. The cubic root of 25490196 is about 294.3005395401.

The spelling of 25490196 in words is "twenty-five million, four hundred ninety thousand, one hundred ninety-six".