25520063451 has 8 divisors (see below), whose sum is σ = 36028324944. Its totient is φ = 16012588800.

The previous prime is 25520063419. The next prime is 25520063467. The reversal of 25520063451 is 15436002552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25520063451 - 2⁵ = 25520063419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25520063551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250196650 + ... + 250196751.

It is an arithmetic number, because the mean of its divisors is an integer number (4503540618).

Almost surely, 2^25520063451 is an apocalyptic number.

25520063451 is a deficient number, since it is larger than the sum of its proper divisors (10508261493).

25520063451 is a wasteful number, since it uses less digits than its factorization.

25520063451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500393421.

The product of its (nonzero) digits is 36000, while the sum is 33.

The spelling of 25520063451 in words is "twenty-five billion, five hundred twenty million, sixty-three thousand, four hundred fifty-one".