25123122 has 20 divisors (see below), whose sum is σ = 56294766. Its totient is φ = 8374320.

The previous prime is 25123103. The next prime is 25123129. The reversal of 25123122 is 22132152.

It can be written as a sum of positive squares in only one way, i.e., 24591681 + 531441 = 4959^2 + 729^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 25123095 and 25123104.

It is not an unprimeable number, because it can be changed into a prime (25123129) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 77379 + ... + 77702.

Almost surely, 2^25123122 is an apocalyptic number.

25123122 is an abundant number, since it is smaller than the sum of its proper divisors (31171644).

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

25123122 is a wasteful number, since it uses less digits than its factorization.

25123122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155095 (or 155086 counting only the distinct ones).

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

The square root of 25123122 is about 5012.2970781868. The cubic root of 25123122 is about 292.8810025149.

Adding to 25123122 its reverse (22132152), we get a palindrome (47255274).

The spelling of 25123122 in words is "twenty-five million, one hundred twenty-three thousand, one hundred twenty-two".