25550422 has 32 divisors (see below), whose sum is σ = 42301440. Its totient is φ = 11525760.

The previous prime is 25550419. The next prime is 25550431. The reversal of 25550422 is 22405552.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94147 + ... + 94417.

It is an arithmetic number, because the mean of its divisors is an integer number (1321920).

Almost surely, 2^25550422 is an apocalyptic number.

25550422 is a deficient number, since it is larger than the sum of its proper divisors (16751018).

25550422 is a wasteful number, since it uses less digits than its factorization.

25550422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396.

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 25550422 is about 5054.7425255892. The cubic root of 25550422 is about 294.5321397373.

Adding to 25550422 its reverse (22405552), we get a palindrome (47955974).

The spelling of 25550422 in words is "twenty-five million, five hundred fifty thousand, four hundred twenty-two".