25715253 has 4 divisors (see below), whose sum is σ = 34287008. Its totient is φ = 17143500.

The previous prime is 25715243. The next prime is 25715267. The reversal of 25715253 is 35251752.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 25715253 - 2¹³ = 25707061 is a prime.

It is a super-2 number, since 2×25715253² = 1322548473708018, 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 25715253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25715243) 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, 4285873 + ... + 4285878.

It is an arithmetic number, because the mean of its divisors is an integer number (8571752).

Almost surely, 2^25715253 is an apocalyptic number.

It is an amenable number.

25715253 is a deficient number, since it is larger than the sum of its proper divisors (8571755).

25715253 is an equidigital number, since it uses as much as digits as its factorization.

25715253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8571754.

The product of its digits is 10500, while the sum is 30.

The square root of 25715253 is about 5071.0209031318. The cubic root of 25715253 is about 295.1641449795.

The spelling of 25715253 in words is "twenty-five million, seven hundred fifteen thousand, two hundred fifty-three".