25758253 has 8 divisors (see below), whose sum is σ = 26730872. Its totient is φ = 24800256.

The previous prime is 25758233. The next prime is 25758277. The reversal of 25758253 is 35285752.

25758253 is a nontrivial binomial coefficient, being equal to C(7178, 2).

It can be written as a sum of positive squares in 4 ways, for example, as 14722569 + 11035684 = 3837^2 + 3322^2 .

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

It is a 5-Lehmer number, since φ(25758253) divides (25758253-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 25758253 - 2⁹ = 25757741 is a prime.

It is a super-2 number, since 2×25758253² = 1326975195224018, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25758203) 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, 1 + ... + 7177.

It is an arithmetic number, because the mean of its divisors is an integer number (3341359).

Almost surely, 2^25758253 is an apocalyptic number.

25758253 is the 7177-th triangular number and also the 3589-th hexagonal number.

25758253 is the 2393-rd centered nonagonal number.

It is an amenable number.

25758253 is a deficient number, since it is larger than the sum of its proper divisors (972619).

25758253 is an equidigital number, since it uses as much as digits as its factorization.

25758253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7311.

The product of its digits is 84000, while the sum is 37.

The square root of 25758253 is about 5075.2589096518. The cubic root of 25758253 is about 295.3285738552.

The spelling of 25758253 in words is "twenty-five million, seven hundred fifty-eight thousand, two hundred fifty-three".