25421123 has 8 divisors (see below), whose sum is σ = 31287648. Its totient is φ = 20113344.

The previous prime is 25421119. The next prime is 25421129. The reversal of 25421123 is 32112452.

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 25421123 - 2² = 25421119 is a prime.

It is a super-2 number, since 2×25421123² = 1292466989162258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25421095 and 25421104.

It is not an unprimeable number, because it can be changed into a prime (25421129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139586 + ... + 139767.

It is an arithmetic number, because the mean of its divisors is an integer number (3910956).

Almost surely, 2^25421123 is an apocalyptic number.

25421123 is a deficient number, since it is larger than the sum of its proper divisors (5866525).

25421123 is a wasteful number, since it uses less digits than its factorization.

25421123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279373.

The product of its digits is 480, while the sum is 20.

The square root of 25421123 is about 5041.9364335541. The cubic root of 25421123 is about 294.0344684779.

Adding to 25421123 its reverse (32112452), we get a palindrome (57533575).

The spelling of 25421123 in words is "twenty-five million, four hundred twenty-one thousand, one hundred twenty-three".