25953121 has 8 divisors (see below), whose sum is σ = 26469288. Its totient is φ = 25440000.

The previous prime is 25953119. The next prime is 25953157. The reversal of 25953121 is 12135952.

It can be written as a sum of positive squares in 4 ways, for example, as 6275025 + 19678096 = 2505^2 + 4436^2 .

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 25953121 - 2¹ = 25953119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25953121.

It is not an unprimeable number, because it can be changed into a prime (25950121) 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, 23931 + ... + 24991.

It is an arithmetic number, because the mean of its divisors is an integer number (3308661).

Almost surely, 2^25953121 is an apocalyptic number.

It is an amenable number.

25953121 is a deficient number, since it is larger than the sum of its proper divisors (516167).

25953121 is a wasteful number, since it uses less digits than its factorization.

25953121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1523.

The product of its digits is 2700, while the sum is 28.

The square root of 25953121 is about 5094.4205754924. The cubic root of 25953121 is about 296.0714499114.

The spelling of 25953121 in words is "twenty-five million, nine hundred fifty-three thousand, one hundred twenty-one".