25451122 has 4 divisors (see below), whose sum is σ = 38176686. Its totient is φ = 12725560.

The previous prime is 25451117. The next prime is 25451123. The reversal of 25451122 is 22115452.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 24890121 + 561001 = 4989^2 + 749^2 .

It is a super-2 number, since 2×25451122² = 1295519222117768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25451093 and 25451102.

It is not an unprimeable number, because it can be changed into a prime (25451123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6362779 + ... + 6362782.

Almost surely, 2^25451122 is an apocalyptic number.

25451122 is a deficient number, since it is larger than the sum of its proper divisors (12725564).

25451122 is a wasteful number, since it uses less digits than its factorization.

25451122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12725563.

The product of its digits is 800, while the sum is 22.

The square root of 25451122 is about 5044.9105046571. The cubic root of 25451122 is about 294.1500845683.

Adding to 25451122 its reverse (22115452), we get a palindrome (47566574).

The spelling of 25451122 in words is "twenty-five million, four hundred fifty-one thousand, one hundred twenty-two".