25051122 has 12 divisors (see below), whose sum is σ = 54277470. Its totient is φ = 8350368.

The previous prime is 25051121. The next prime is 25051127. The reversal of 25051122 is 22115052.

It can be written as a sum of positive squares in only one way, i.e., 14220441 + 10830681 = 3771^2 + 3291^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1391729 = 25051122 / (2 + 5 + 0 + 5 + 1 + 1 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 25051095 and 25051104.

It is not an unprimeable number, because it can be changed into a prime (25051121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 695847 + ... + 695882.

Almost surely, 2^25051122 is an apocalyptic number.

25051122 is an abundant number, since it is smaller than the sum of its proper divisors (29226348).

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

25051122 is a wasteful number, since it uses less digits than its factorization.

25051122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391737 (or 1391734 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 25051122 is about 5005.1095892098. The cubic root of 25051122 is about 292.6009469676.

Adding to 25051122 its reverse (22115052), we get a palindrome (47166174).

The spelling of 25051122 in words is "twenty-five million, fifty-one thousand, one hundred twenty-two".