25324005551 has 4 divisors (see below), whose sum is σ = 27272005992. Its totient is φ = 23376005112.

The previous prime is 25324005481. The next prime is 25324005667. The reversal of 25324005551 is 15550042352.

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 25324005551 - 2¹⁴ = 25323989167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25324005151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 974000201 + ... + 974000226.

It is an arithmetic number, because the mean of its divisors is an integer number (6818001498).

Almost surely, 2^25324005551 is an apocalyptic number.

25324005551 is a deficient number, since it is larger than the sum of its proper divisors (1948000441).

25324005551 is a wasteful number, since it uses less digits than its factorization.

25324005551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1948000440.

The product of its (nonzero) digits is 30000, while the sum is 32.

The spelling of 25324005551 in words is "twenty-five billion, three hundred twenty-four million, five thousand, five hundred fifty-one".