25145122 has 8 divisors (see below), whose sum is σ = 37749276. Its totient is φ = 12562032.

The previous prime is 25145053. The next prime is 25145129. The reversal of 25145122 is 22154152.

It can be written as a sum of positive squares in 2 ways, for example, as 24710841 + 434281 = 4971^2 + 659^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 25145093 and 25145102.

It is not an unprimeable number, because it can be changed into a prime (25145129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1833 + ... + 7324.

Almost surely, 2^25145122 is an apocalyptic number.

25145122 is a deficient number, since it is larger than the sum of its proper divisors (12604154).

25145122 is a wasteful number, since it uses less digits than its factorization.

25145122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10532.

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

The square root of 25145122 is about 5014.4912005108. The cubic root of 25145122 is about 292.9664683018.

Adding to 25145122 its reverse (22154152), we get a palindrome (47299274).

The spelling of 25145122 in words is "twenty-five million, one hundred forty-five thousand, one hundred twenty-two".