25272321 has 8 divisors (see below), whose sum is σ = 34030464. Its totient is φ = 16681200.

The previous prime is 25272307. The next prime is 25272341. The reversal of 25272321 is 12327252.

It is a happy number.

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

It is not a de Polignac number, because 25272321 - 2⁶ = 25272257 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 25272291 and 25272300.

It is not an unprimeable number, because it can be changed into a prime (25272341) 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, 41401 + ... + 42006.

It is an arithmetic number, because the mean of its divisors is an integer number (4253808).

It is a Proth number, since it is equal to 3085 ⋅ 2¹³ + 1 and 3085 < 2¹³.

Almost surely, 2^25272321 is an apocalyptic number.

It is an amenable number.

25272321 is a deficient number, since it is larger than the sum of its proper divisors (8758143).

25272321 is a wasteful number, since it uses less digits than its factorization.

25272321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83511.

The product of its digits is 1680, while the sum is 24.

The square root of 25272321 is about 5027.1583424436. The cubic root of 25272321 is about 293.4596372690.

Adding to 25272321 its reverse (12327252), we get a palindrome (37599573).

The spelling of 25272321 in words is "twenty-five million, two hundred seventy-two thousand, three hundred twenty-one".