25221134 has 8 divisors (see below), whose sum is σ = 38711640. Its totient is φ = 12317256.

The previous prime is 25221103. The next prime is 25221137. The reversal of 25221134 is 43112252.

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

It is a super-2 number, since 2×25221134² = 1272211200491912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25221137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146549 + ... + 146720.

It is an arithmetic number, because the mean of its divisors is an integer number (4838955).

Almost surely, 2^25221134 is an apocalyptic number.

25221134 is a deficient number, since it is larger than the sum of its proper divisors (13490506).

25221134 is a wasteful number, since it uses less digits than its factorization.

25221134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293314.

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

The square root of 25221134 is about 5022.0647148359. The cubic root of 25221134 is about 293.2613772653.

Adding to 25221134 its reverse (43112252), we get a palindrome (68333386).

The spelling of 25221134 in words is "twenty-five million, two hundred twenty-one thousand, one hundred thirty-four".