25212069 has 24 divisors (see below), whose sum is σ = 39162240. Its totient is φ = 15579648.

The previous prime is 25212067. The next prime is 25212097. The reversal of 25212069 is 96021252.

It is not a de Polignac number, because 25212069 - 2¹ = 25212067 is a prime.

It is a super-2 number, since 2×25212069² = 1271296846521522, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25212067) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6469 + ... + 9605.

It is an arithmetic number, because the mean of its divisors is an integer number (1631760).

Almost surely, 2^25212069 is an apocalyptic number.

It is an amenable number.

25212069 is a deficient number, since it is larger than the sum of its proper divisors (13950171).

25212069 is a wasteful number, since it uses less digits than its factorization.

25212069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3209 (or 3206 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 25212069 is about 5021.1621164826. The cubic root of 25212069 is about 293.2262383095.

It can be divided in two parts, 252 and 12069, that added together give a palindrome (12321).

The spelling of 25212069 in words is "twenty-five million, two hundred twelve thousand, sixty-nine".