25127421 has 8 divisors (see below), whose sum is σ = 36549024. Its totient is φ = 15228720.

The previous prime is 25127413. The next prime is 25127429. The reversal of 25127421 is 12472152.

It is an interprime number because it is at equal distance from previous prime (25127413) and next prime (25127429).

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

It is not a de Polignac number, because 25127421 - 2³ = 25127413 is a prime.

It is a super-2 number, since 2×25127421² = 1262774572222482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25127391 and 25127400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25127429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380686 + ... + 380751.

It is an arithmetic number, because the mean of its divisors is an integer number (4568628).

Almost surely, 2^25127421 is an apocalyptic number.

It is an amenable number.

25127421 is a deficient number, since it is larger than the sum of its proper divisors (11421603).

25127421 is a wasteful number, since it uses less digits than its factorization.

25127421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761451.

The product of its digits is 1120, while the sum is 24.

The square root of 25127421 is about 5012.7259051339. The cubic root of 25127421 is about 292.8977072277.

Adding to 25127421 its reverse (12472152), we get a palindrome (37599573).

It can be divided in two parts, 251 and 27421, that added together give a palindrome (27672).

The spelling of 25127421 in words is "twenty-five million, one hundred twenty-seven thousand, four hundred twenty-one".