25501422 has 16 divisors (see below), whose sum is σ = 51472080. Its totient is φ = 8422272.

The previous prime is 25501391. The next prime is 25501423. The reversal of 25501422 is 22410552.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25501423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18843 + ... + 20150.

It is an arithmetic number, because the mean of its divisors is an integer number (3217005).

Almost surely, 2^25501422 is an apocalyptic number.

25501422 is an abundant number, since it is smaller than the sum of its proper divisors (25970658).

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

25501422 is a wasteful number, since it uses less digits than its factorization.

25501422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39107.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 25501422 is about 5049.8932661988. The cubic root of 25501422 is about 294.3437369714.

Adding to 25501422 its reverse (22410552), we get a palindrome (47911974).

The spelling of 25501422 in words is "twenty-five million, five hundred one thousand, four hundred twenty-two".