25621123 has 8 divisors (see below), whose sum is σ = 28914480. Its totient is φ = 22488480.

The previous prime is 25621117. The next prime is 25621129. The reversal of 25621123 is 32112652.

It is an interprime number because it is at equal distance from previous prime (25621117) and next prime (25621129).

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 25621123 - 2¹⁷ = 25490051 is a prime.

It is a super-2 number, since 2×25621123² = 1312883887562258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25621094 and 25621103.

It is not an unprimeable number, because it can be changed into a prime (25621129) 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, 39840 + ... + 40477.

It is an arithmetic number, because the mean of its divisors is an integer number (3614310).

Almost surely, 2^25621123 is an apocalyptic number.

25621123 is a deficient number, since it is larger than the sum of its proper divisors (3293357).

25621123 is a wasteful number, since it uses less digits than its factorization.

25621123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80357.

The product of its digits is 720, while the sum is 22.

The square root of 25621123 is about 5061.7312255789. The cubic root of 25621123 is about 294.8035578123.

Adding to 25621123 its reverse (32112652), we get a palindrome (57733775).

The spelling of 25621123 in words is "twenty-five million, six hundred twenty-one thousand, one hundred twenty-three".