25653327648 has 48 divisors (see below), whose sum is σ = 72519987456. Its totient is φ = 7893331200.

The previous prime is 25653327647. The next prime is 25653327649. The reversal of 25653327648 is 84672335652.

It is an interprime number because it is at equal distance from previous prime (25653327647) and next prime (25653327649).

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 25653327648.

It is not an unprimeable number, because it can be changed into a prime (25653327647) 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, 10276528 + ... + 10279023.

It is an arithmetic number, because the mean of its divisors is an integer number (1510833072).

Almost surely, 2^25653327648 is an apocalyptic number.

It is an amenable number.

25653327648 is an abundant number, since it is smaller than the sum of its proper divisors (46866659808).

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

25653327648 is a wasteful number, since it uses less digits than its factorization.

25653327648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20555577 (or 20555569 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 51.

The spelling of 25653327648 in words is "twenty-five billion, six hundred fifty-three million, three hundred twenty-seven thousand, six hundred forty-eight".