25402122 has 24 divisors (see below), whose sum is σ = 55205280. Its totient is φ = 8441640.

The previous prime is 25402099. The next prime is 25402127. The reversal of 25402122 is 22120452.

25402122 is a `hidden beast` number, since 2 + 540 + 2 + 122 = 666.

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 = 25402095 and 25402104.

It is not an unprimeable number, because it can be changed into a prime (25402127) 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 in 11 ways as a sum of consecutive naturals, for example, 4497 + ... + 8427.

It is an arithmetic number, because the mean of its divisors is an integer number (2300220).

Almost surely, 2^25402122 is an apocalyptic number.

25402122 is an abundant number, since it is smaller than the sum of its proper divisors (29803158).

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

25402122 is a wasteful number, since it uses less digits than its factorization.

25402122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4298 (or 4295 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 25402122 is about 5040.0517854482. The cubic root of 25402122 is about 293.9611916011.

Adding to 25402122 its reverse (22120452), we get a palindrome (47522574).

The spelling of 25402122 in words is "twenty-five million, four hundred two thousand, one hundred twenty-two".