25611155460 has 72 divisors (see below), whose sum is σ = 84749648256. Its totient is φ = 6208764480.

The previous prime is 25611155459. The next prime is 25611155473. The reversal of 25611155460 is 6455111652.

25611155460 is a `hidden beast` number, since 2 + 561 + 1 + 1 + 55 + 46 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6465484 + ... + 6469443.

It is an arithmetic number, because the mean of its divisors is an integer number (1177078448).

Almost surely, 2^25611155460 is an apocalyptic number.

25611155460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25611155460 is an abundant number, since it is smaller than the sum of its proper divisors (59138492796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25611155460 is a wasteful number, since it uses less digits than its factorization.

25611155460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12934953 (or 12934948 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The spelling of 25611155460 in words is "twenty-five billion, six hundred eleven million, one hundred fifty-five thousand, four hundred sixty".