25761426345 has 24 divisors (see below), whose sum is σ = 46594581696. Its totient is φ = 13142060448.

The previous prime is 25761426329. The next prime is 25761426403. The reversal of 25761426345 is 54362416752.

25761426345 is a `hidden beast` number, since 2 + 5 + 7 + 6 + 1 + 4 + 2 + 634 + 5 = 666.

It is not a de Polignac number, because 25761426345 - 2⁴ = 25761426329 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 25761426345.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 12444099 + ... + 12446168.

It is an arithmetic number, because the mean of its divisors is an integer number (1941440904).

Almost surely, 2^25761426345 is an apocalyptic number.

It is an amenable number.

25761426345 is a deficient number, since it is larger than the sum of its proper divisors (20833155351).

25761426345 is a wasteful number, since it uses less digits than its factorization.

25761426345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24890301 (or 24890298 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 45.

The spelling of 25761426345 in words is "twenty-five billion, seven hundred sixty-one million, four hundred twenty-six thousand, three hundred forty-five".