25276251648651 has 16 divisors (see below), whose sum is σ = 33897763612800. Its totient is φ = 16752830488448.

The previous prime is 25276251648647. The next prime is 25276251648653. The reversal of 25276251648651 is 15684615267252.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 25276251648651 - 2² = 25276251648647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25276251648653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3097521 + ... + 7755458.

It is an arithmetic number, because the mean of its divisors is an integer number (2118610225800).

Almost surely, 2^{25276251648651} is an apocalyptic number.

25276251648651 is a deficient number, since it is larger than the sum of its proper divisors (8621511964149).

25276251648651 is a wasteful number, since it uses less digits than its factorization.

25276251648651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10857498.

The product of its digits is 48384000, while the sum is 60.

The spelling of 25276251648651 in words is "twenty-five trillion, two hundred seventy-six billion, two hundred fifty-one million, six hundred forty-eight thousand, six hundred fifty-one".