25434562144 has 48 divisors (see below), whose sum is σ = 52270202880. Its totient is φ = 12159987840.

The previous prime is 25434562141. The next prime is 25434562171. The reversal of 25434562144 is 44126543452.

It is a junction number, because it is equal to n+sod(n) for n = 25434562097 and 25434562106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25434562141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3101089 + ... + 3109279.

It is an arithmetic number, because the mean of its divisors is an integer number (1088962560).

Almost surely, 2^25434562144 is an apocalyptic number.

It is an amenable number.

25434562144 is an abundant number, since it is smaller than the sum of its proper divisors (26835640736).

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

25434562144 is a wasteful number, since it uses less digits than its factorization.

25434562144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12443 (or 12435 counting only the distinct ones).

The product of its digits is 460800, while the sum is 40.

The spelling of 25434562144 in words is "twenty-five billion, four hundred thirty-four million, five hundred sixty-two thousand, one hundred forty-four".