22543525251 has 24 divisors (see below), whose sum is σ = 36913378320. Its totient is φ = 13142782656.

The previous prime is 22543525243. The next prime is 22543525259. The reversal of 22543525251 is 15252534522.

22543525251 is a `hidden beast` number, since 2 + 2 + 54 + 352 + 5 + 251 = 666.

It is an interprime number because it is at equal distance from previous prime (22543525243) and next prime (22543525259).

It is not a de Polignac number, because 22543525251 - 2³ = 22543525243 is a prime.

It is a super-2 number, since 2×22543525251² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22543525259) 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, 5068296 + ... + 5072741.

It is an arithmetic number, because the mean of its divisors is an integer number (1538057430).

Almost surely, 2^22543525251 is an apocalyptic number.

22543525251 is a deficient number, since it is larger than the sum of its proper divisors (14369853069).

22543525251 is a wasteful number, since it uses less digits than its factorization.

22543525251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10141075 (or 10141072 counting only the distinct ones).

The product of its digits is 120000, while the sum is 36.

The spelling of 22543525251 in words is "twenty-two billion, five hundred forty-three million, five hundred twenty-five thousand, two hundred fifty-one".