25705652445 has 48 divisors (see below), whose sum is σ = 50175051264. Its totient is φ = 12061296000.

The previous prime is 25705652443. The next prime is 25705652447. The reversal of 25705652445 is 54425650752.

25705652445 is a `hidden beast` number, since 2 + 5 + 70 + 56 + 524 + 4 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (25705652443) and next prime (25705652447).

It is not a de Polignac number, because 25705652445 - 2¹ = 25705652443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 25705652445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25705652443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 822246 + ... + 852935.

It is an arithmetic number, because the mean of its divisors is an integer number (1045313568).

Almost surely, 2^25705652445 is an apocalyptic number.

It is an amenable number.

25705652445 is a deficient number, since it is larger than the sum of its proper divisors (24469398819).

25705652445 is a wasteful number, since it uses less digits than its factorization.

25705652445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1675234 (or 1675231 counting only the distinct ones).

The product of its (nonzero) digits is 1680000, while the sum is 45.

The spelling of 25705652445 in words is "twenty-five billion, seven hundred five million, six hundred fifty-two thousand, four hundred forty-five".