25611501047 has 8 divisors (see below), whose sum is σ = 28694950032. Its totient is φ = 22653907200.

The previous prime is 25611501007. The next prime is 25611501067. The reversal of 25611501047 is 74010511652.

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

It is a cyclic number.

It is not a de Polignac number, because 25611501047 - 2¹⁶ = 25611435511 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 (25611501007) 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 7 ways as a sum of consecutive naturals, for example, 31463354 + ... + 31464167.

It is an arithmetic number, because the mean of its divisors is an integer number (3586868754).

Almost surely, 2^25611501047 is an apocalyptic number.

25611501047 is a deficient number, since it is larger than the sum of its proper divisors (3083448985).

25611501047 is a wasteful number, since it uses less digits than its factorization.

25611501047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62927569.

The product of its (nonzero) digits is 8400, while the sum is 32.

The spelling of 25611501047 in words is "twenty-five billion, six hundred eleven million, five hundred one thousand, forty-seven".