25645930244 has 24 divisors (see below), whose sum is σ = 51840438048. Its totient is φ = 10971520640.

The previous prime is 25645930231. The next prime is 25645930253. The reversal of 25645930244 is 44203954652.

It is a super-2 number, since 2×25645930244² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 25645930195 and 25645930204.

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 7 ways as a sum of consecutive naturals, for example, 17142254 + ... + 17143749.

It is an arithmetic number, because the mean of its divisors is an integer number (2160018252).

Almost surely, 2^25645930244 is an apocalyptic number.

It is an amenable number.

25645930244 is an abundant number, since it is smaller than the sum of its proper divisors (26194507804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25645930244 is a wasteful number, since it uses less digits than its factorization.

25645930244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34286035 (or 34286033 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 44.

The spelling of 25645930244 in words is "twenty-five billion, six hundred forty-five million, nine hundred thirty thousand, two hundred forty-four".