25406207451 has 12 divisors (see below), whose sum is σ = 37963298880. Its totient is φ = 16353420720.

The previous prime is 25406207423. The next prime is 25406207471. The reversal of 25406207451 is 15470260452.

It is a happy number.

25406207451 is a `hidden beast` number, since 2 + 5 + 406 + 207 + 45 + 1 = 666.

It is not a de Polignac number, because 25406207451 - 2¹⁷ = 25406076379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25406207471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48670635 + ... + 48671156.

It is an arithmetic number, because the mean of its divisors is an integer number (3163608240).

Almost surely, 2^25406207451 is an apocalyptic number.

25406207451 is a deficient number, since it is larger than the sum of its proper divisors (12557091429).

25406207451 is a wasteful number, since it uses less digits than its factorization.

25406207451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97341826 (or 97341823 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The spelling of 25406207451 in words is "twenty-five billion, four hundred six million, two hundred seven thousand, four hundred fifty-one".