25211430 has 96 divisors (see below), whose sum is σ = 68930784. Its totient is φ = 6386688.

The previous prime is 25211429. The next prime is 25211449. The reversal of 25211430 is 3411252.

25211430 is a `hidden beast` number, since 2 + 521 + 143 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 223054 + ... + 223166.

It is an arithmetic number, because the mean of its divisors is an integer number (718029).

Almost surely, 2^25211430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25211430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34465392).

25211430 is an abundant number, since it is smaller than the sum of its proper divisors (43719354).

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

25211430 is a wasteful number, since it uses less digits than its factorization.

25211430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 25211430 is about 5021.0984853914. The cubic root of 25211430 is about 293.2237610151.

Adding to 25211430 its reverse (3411252), we get a palindrome (28622682).

The spelling of 25211430 in words is "twenty-five million, two hundred eleven thousand, four hundred thirty".