25401122 has 4 divisors (see below), whose sum is σ = 38101686. Its totient is φ = 12700560.

The previous prime is 25401097. The next prime is 25401127. The reversal of 25401122 is 22110452.

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., 15358561 + 10042561 = 3919^2 + 3169^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25401122.

It is not an unprimeable number, because it can be changed into a prime (25401127) 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, 6350279 + ... + 6350282.

Almost surely, 2^25401122 is an apocalyptic number.

25401122 is a deficient number, since it is larger than the sum of its proper divisors (12700564).

25401122 is a wasteful number, since it uses less digits than its factorization.

25401122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12700563.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 25401122 is about 5039.9525791420. The cubic root of 25401122 is about 293.9573341143.

Adding to 25401122 its reverse (22110452), we get a palindrome (47511574).

The spelling of 25401122 in words is "twenty-five million, four hundred one thousand, one hundred twenty-two".