25211898 has 40 divisors (see below), whose sum is σ = 59473920. Its totient is φ = 7960680.

The previous prime is 25211891. The next prime is 25211903. The reversal of 25211898 is 89811252.

It is not an unprimeable number, because it can be changed into a prime (25211891) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 1018 + ... + 7173.

It is an arithmetic number, because the mean of its divisors is an integer number (1486848).

Almost surely, 2^25211898 is an apocalyptic number.

25211898 is an abundant number, since it is smaller than the sum of its proper divisors (34262022).

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

25211898 is a wasteful number, since it uses less digits than its factorization.

25211898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8224 (or 8215 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The square root of 25211898 is about 5021.1450885231. The cubic root of 25211898 is about 293.2255753756.

The spelling of 25211898 in words is "twenty-five million, two hundred eleven thousand, eight hundred ninety-eight".