25472421077 has 4 divisors (see below), whose sum is σ = 25719726240. Its totient is φ = 25225115916.

The previous prime is 25472421071. The next prime is 25472421113. The reversal of 25472421077 is 77012427452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25472421077 - 2⁸ = 25472420821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25472421071) 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, 123652427 + ... + 123652632.

It is an arithmetic number, because the mean of its divisors is an integer number (6429931560).

Almost surely, 2^25472421077 is an apocalyptic number.

It is an amenable number.

25472421077 is a deficient number, since it is larger than the sum of its proper divisors (247305163).

25472421077 is a wasteful number, since it uses less digits than its factorization.

25472421077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247305162.

The product of its (nonzero) digits is 219520, while the sum is 41.

The spelling of 25472421077 in words is "twenty-five billion, four hundred seventy-two million, four hundred twenty-one thousand, seventy-seven".