25223512427 has 4 divisors (see below), whose sum is σ = 25459246296. Its totient is φ = 24987778560.

The previous prime is 25223512423. The next prime is 25223512429. The reversal of 25223512427 is 72421532252.

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 25223512427 - 2² = 25223512423 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25223512423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117866774 + ... + 117866987.

It is an arithmetic number, because the mean of its divisors is an integer number (6364811574).

Almost surely, 2^25223512427 is an apocalyptic number.

25223512427 is a deficient number, since it is larger than the sum of its proper divisors (235733869).

25223512427 is a wasteful number, since it uses less digits than its factorization.

25223512427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235733868.

The product of its digits is 67200, while the sum is 35.

The spelling of 25223512427 in words is "twenty-five billion, two hundred twenty-three million, five hundred twelve thousand, four hundred twenty-seven".