25228152765 has 24 divisors (see below), whose sum is σ = 43746139008. Its totient is φ = 13449679200.

The previous prime is 25228152667. The next prime is 25228152767. The reversal of 25228152765 is 56725182252.

25228152765 is a `hidden beast` number, since 2 + 522 + 8 + 1 + 52 + 76 + 5 = 666.

It is not a de Polignac number, because 25228152765 - 2⁷ = 25228152637 is a prime.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 25228152765.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25228152767) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4912 + ... + 224678.

It is an arithmetic number, because the mean of its divisors is an integer number (1822755792).

Almost surely, 2^25228152765 is an apocalyptic number.

It is an amenable number.

25228152765 is a deficient number, since it is larger than the sum of its proper divisors (18517986243).

25228152765 is a wasteful number, since it uses less digits than its factorization.

25228152765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222329 (or 222326 counting only the distinct ones).

The product of its digits is 672000, while the sum is 45.

The spelling of 25228152765 in words is "twenty-five billion, two hundred twenty-eight million, one hundred fifty-two thousand, seven hundred sixty-five".