25021253 has 4 divisors (see below), whose sum is σ = 25044108. Its totient is φ = 24998400.

The previous prime is 25021231. The next prime is 25021267. The reversal of 25021253 is 35212052.

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 20948929 + 4072324 = 4577^2 + 2018^2 .

It is a cyclic number.

It is not a de Polignac number, because 25021253 - 2⁶ = 25021189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25021273) 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, 9698 + ... + 12003.

It is an arithmetic number, because the mean of its divisors is an integer number (6261027).

Almost surely, 2^25021253 is an apocalyptic number.

It is an amenable number.

25021253 is a deficient number, since it is larger than the sum of its proper divisors (22855).

25021253 is a wasteful number, since it uses less digits than its factorization.

25021253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22854.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 25021253 is about 5002.1248485019. The cubic root of 25021253 is about 292.4846092177.

The spelling of 25021253 in words is "twenty-five million, twenty-one thousand, two hundred fifty-three".