25226242673985 has 12 divisors (see below), whose sum is σ = 43725487301652. Its totient is φ = 13453996092768.

The previous prime is 25226242673981. The next prime is 25226242674013. The reversal of 25226242673985 is 58937624262252.

25226242673985 is a `hidden beast` number, since 2 + 5 + 2 + 2 + 62 + 426 + 73 + 9 + 85 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6205793446449 + 19020449227536 = 2491143^2 + 4361244^2 .

It is not a de Polignac number, because 25226242673985 - 2² = 25226242673981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25226242673981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 280291585222 + ... + 280291585311.

It is an arithmetic number, because the mean of its divisors is an integer number (3643790608471).

Almost surely, 2^{25226242673985} is an apocalyptic number.

It is an amenable number.

25226242673985 is a deficient number, since it is larger than the sum of its proper divisors (18499244627667).

25226242673985 is a wasteful number, since it uses less digits than its factorization.

25226242673985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560583170544 (or 560583170541 counting only the distinct ones).

The product of its digits is 174182400, while the sum is 63.

The spelling of 25226242673985 in words is "twenty-five trillion, two hundred twenty-six billion, two hundred forty-two million, six hundred seventy-three thousand, nine hundred eighty-five".