25253533 has 4 divisors (see below), whose sum is σ = 25266780. Its totient is φ = 25240288.

The previous prime is 25253509. The next prime is 25253537. The reversal of 25253533 is 33535252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22829284 + 2424249 = 4778^2 + 1557^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25253533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25253537) 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, 3160 + ... + 7777.

It is an arithmetic number, because the mean of its divisors is an integer number (6316695).

Almost surely, 2^25253533 is an apocalyptic number.

It is an amenable number.

25253533 is a deficient number, since it is larger than the sum of its proper divisors (13247).

25253533 is a wasteful number, since it uses less digits than its factorization.

25253533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13246.

The product of its digits is 13500, while the sum is 28.

The square root of 25253533 is about 5025.2893449034. The cubic root of 25253533 is about 293.3868977882.

Adding to 25253533 its reverse (33535252), we get a palindrome (58788785).

The spelling of 25253533 in words is "twenty-five million, two hundred fifty-three thousand, five hundred thirty-three".