25125321 has 8 divisors (see below), whose sum is σ = 36077440. Its totient is φ = 15461712.

The previous prime is 25125313. The next prime is 25125329. The reversal of 25125321 is 12352152.

It is an interprime number because it is at equal distance from previous prime (25125313) and next prime (25125329).

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

It is not a de Polignac number, because 25125321 - 2³ = 25125313 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25125329) 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, 322081 + ... + 322158.

It is an arithmetic number, because the mean of its divisors is an integer number (4509680).

Almost surely, 2^25125321 is an apocalyptic number.

It is an amenable number.

25125321 is a deficient number, since it is larger than the sum of its proper divisors (10952119).

25125321 is a wasteful number, since it uses less digits than its factorization.

25125321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644255.

The product of its digits is 600, while the sum is 21.

The square root of 25125321 is about 5012.5164338883. The cubic root of 25125321 is about 292.8895474525.

Adding to 25125321 its reverse (12352152), we get a palindrome (37477473).

The spelling of 25125321 in words is "twenty-five million, one hundred twenty-five thousand, three hundred twenty-one".