25069423221 has 12 divisors (see below), whose sum is σ = 36297817920. Its totient is φ = 16673058600.

The previous prime is 25069423219. The next prime is 25069423231. The reversal of 25069423221 is 12232496052.

25069423221 is a `hidden beast` number, since 2 + 5 + 0 + 6 + 9 + 423 + 221 = 666.

It is not a de Polignac number, because 25069423221 - 2¹ = 25069423219 is a prime.

It is a super-2 number, since 2×25069423221² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25069423231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3320205 + ... + 3327746.

It is an arithmetic number, because the mean of its divisors is an integer number (3024818160).

Almost surely, 2^25069423221 is an apocalyptic number.

It is an amenable number.

25069423221 is a deficient number, since it is larger than the sum of its proper divisors (11228394699).

25069423221 is a wasteful number, since it uses less digits than its factorization.

25069423221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6648376 (or 6648373 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 25069423221 in words is "twenty-five billion, sixty-nine million, four hundred twenty-three thousand, two hundred twenty-one".