25801060551 has 8 divisors (see below), whose sum is σ = 39315901824. Its totient is φ = 14743463160.

The previous prime is 25801060541. The next prime is 25801060559. The reversal of 25801060551 is 15506010852.

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

It is not a de Polignac number, because 25801060551 - 2¹⁵ = 25801027783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25801060559) 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 7 ways as a sum of consecutive naturals, for example, 614310945 + ... + 614310986.

It is an arithmetic number, because the mean of its divisors is an integer number (4914487728).

Almost surely, 2^25801060551 is an apocalyptic number.

25801060551 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

25801060551 is a deficient number, since it is larger than the sum of its proper divisors (13514841273).

25801060551 is a wasteful number, since it uses less digits than its factorization.

25801060551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228621941.

The product of its (nonzero) digits is 12000, while the sum is 33.

The spelling of 25801060551 in words is "twenty-five billion, eight hundred one million, sixty thousand, five hundred fifty-one".