25673637652 has 24 divisors (see below), whose sum is σ = 48444820200. Its totient is φ = 11834704896.

The previous prime is 25673637617. The next prime is 25673637667.

25673637652 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 154853136 + 25518784516 = 12444^2 + 159746^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a self number, because there is not a number n which added to its sum of digits gives 25673637652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263077 + ... + 347212.

It is an arithmetic number, because the mean of its divisors is an integer number (2018534175).

Almost surely, 2^25673637652 is an apocalyptic number.

It is an amenable number.

25673637652 is a deficient number, since it is larger than the sum of its proper divisors (22771182548).

25673637652 is a wasteful number, since it uses less digits than its factorization.

25673637652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611115 (or 611113 counting only the distinct ones).

The product of its digits is 9525600, while the sum is 52.

The spelling of 25673637652 in words is "twenty-five billion, six hundred seventy-three million, six hundred thirty-seven thousand, six hundred fifty-two".