25451056415 has 16 divisors (see below), whose sum is σ = 33257282400. Its totient is φ = 18624074112.

The previous prime is 25451056403. The next prime is 25451056417. The reversal of 25451056415 is 51465015452.

It is a cyclic number.

It is not a de Polignac number, because 25451056415 - 2¹⁶ = 25450990879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25451056417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4616312 + ... + 4621821.

It is an arithmetic number, because the mean of its divisors is an integer number (2078580150).

Almost surely, 2^25451056415 is an apocalyptic number.

25451056415 is a deficient number, since it is larger than the sum of its proper divisors (7806225985).

25451056415 is a wasteful number, since it uses less digits than its factorization.

25451056415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9238186.

The product of its (nonzero) digits is 120000, while the sum is 38.

The spelling of 25451056415 in words is "twenty-five billion, four hundred fifty-one million, fifty-six thousand, four hundred fifteen".