25555180651 has 24 divisors (see below), whose sum is σ = 34924572144. Its totient is φ = 18381343680.

The previous prime is 25555180627. The next prime is 25555180663. The reversal of 25555180651 is 15608155552.

It is not a de Polignac number, because 25555180651 - 2¹³ = 25555172459 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25555180598 and 25555180607.

It is not an unprimeable number, because it can be changed into a prime (25555180681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1816540 + ... + 1830553.

It is an arithmetic number, because the mean of its divisors is an integer number (1455190506).

Almost surely, 2^25555180651 is an apocalyptic number.

25555180651 is a deficient number, since it is larger than the sum of its proper divisors (9369391493).

25555180651 is a wasteful number, since it uses less digits than its factorization.

25555180651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3647131 (or 3647124 counting only the distinct ones).

The product of its (nonzero) digits is 300000, while the sum is 43.

The spelling of 25555180651 in words is "twenty-five billion, five hundred fifty-five million, one hundred eighty thousand, six hundred fifty-one".