25212039 has 4 divisors (see below), whose sum is σ = 33616056. Its totient is φ = 16808024.

The previous prime is 25212023. The next prime is 25212041. The reversal of 25212039 is 93021252.

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

It is a cyclic number.

It is not a de Polignac number, because 25212039 - 2⁴ = 25212023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25213039) 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, 4202004 + ... + 4202009.

It is an arithmetic number, because the mean of its divisors is an integer number (8404014).

Almost surely, 2^25212039 is an apocalyptic number.

25212039 is a deficient number, since it is larger than the sum of its proper divisors (8404017).

25212039 is an equidigital number, since it uses as much as digits as its factorization.

25212039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8404016.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 25212039 is about 5021.1591291255. The cubic root of 25212039 is about 293.2261220055.

It can be divided in two parts, 2521 and 2039, that added together give a triangular number (4560 = T₉₅).

The spelling of 25212039 in words is "twenty-five million, two hundred twelve thousand, thirty-nine".