25412121 has 24 divisors (see below), whose sum is σ = 42117504. Its totient is φ = 14463360.

The previous prime is 25412111. The next prime is 25412141. The reversal of 25412121 is 12121452.

25412121 is a `hidden beast` number, since 2 + 541 + 2 + 121 = 666.

It is not a de Polignac number, because 25412121 - 2⁵ = 25412089 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25412094 and 25412103.

It is not an unprimeable number, because it can be changed into a prime (25412111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18945 + ... + 20241.

It is an arithmetic number, because the mean of its divisors is an integer number (1754896).

Almost surely, 2^25412121 is an apocalyptic number.

25412121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25412121 is a deficient number, since it is larger than the sum of its proper divisors (16705383).

25412121 is a wasteful number, since it uses less digits than its factorization.

25412121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621 (or 1618 counting only the distinct ones).

The product of its digits is 160, while the sum is 18.

The square root of 25412121 is about 5041.0436419456. The cubic root of 25412121 is about 293.9997570455. Note that the first 3 decimals are identical.

Adding to 25412121 its reverse (12121452), we get a palindrome (37533573).

The spelling of 25412121 in words is "twenty-five million, four hundred twelve thousand, one hundred twenty-one".