25412421 has 8 divisors (see below), whose sum is σ = 34457760. Its totient is φ = 16654352.

The previous prime is 25412419. The next prime is 25412459. The reversal of 25412421 is 12421452.

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

It is a cyclic number.

It is not a de Polignac number, because 25412421 - 2¹ = 25412419 is a prime.

It is a super-3 number, since 3×25412421³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25412461) 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 7 ways as a sum of consecutive naturals, for example, 71610 + ... + 71963.

It is an arithmetic number, because the mean of its divisors is an integer number (4307220).

Almost surely, 2^25412421 is an apocalyptic number.

It is an amenable number.

25412421 is a deficient number, since it is larger than the sum of its proper divisors (9045339).

25412421 is a wasteful number, since it uses less digits than its factorization.

25412421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143635.

The product of its digits is 640, while the sum is 21.

The square root of 25412421 is about 5041.0733976010. The cubic root of 25412421 is about 294.0009139682. Note that the first 3 decimals are identical.

Adding to 25412421 its reverse (12421452), we get a palindrome (37833873).

The spelling of 25412421 in words is "twenty-five million, four hundred twelve thousand, four hundred twenty-one".