25355231 has 8 divisors (see below), whose sum is σ = 28249344. Its totient is φ = 22559320.

The previous prime is 25355227. The next prime is 25355233. The reversal of 25355231 is 13255352.

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 25355231 - 2² = 25355227 is a prime.

It is a super-2 number, since 2×25355231² = 1285775478126722, which contains 22 as substring.

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 25355231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25355233) 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, 24005 + ... + 25038.

It is an arithmetic number, because the mean of its divisors is an integer number (3531168).

Almost surely, 2^25355231 is an apocalyptic number.

25355231 is a deficient number, since it is larger than the sum of its proper divisors (2894113).

25355231 is a wasteful number, since it uses less digits than its factorization.

25355231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49101.

The product of its digits is 4500, while the sum is 26.

The square root of 25355231 is about 5035.3977995785. The cubic root of 25355231 is about 293.7802011502.

The spelling of 25355231 in words is "twenty-five million, three hundred fifty-five thousand, two hundred thirty-one".