25406253044 has 6 divisors (see below), whose sum is σ = 44460942834. Its totient is φ = 12703126520.

The previous prime is 25406253043. The next prime is 25406253107. The reversal of 25406253044 is 44035260452.

It can be written as a sum of positive squares in only one way, i.e., 18716976100 + 6689276944 = 136810^2 + 81788^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25406252995 and 25406253013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25406253043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3175781627 + ... + 3175781634.

It is an arithmetic number, because the mean of its divisors is an integer number (7410157139).

Almost surely, 2^25406253044 is an apocalyptic number.

It is an amenable number.

25406253044 is a deficient number, since it is larger than the sum of its proper divisors (19054689790).

25406253044 is a wasteful number, since it uses less digits than its factorization.

25406253044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6351563265 (or 6351563263 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

The spelling of 25406253044 in words is "twenty-five billion, four hundred six million, two hundred fifty-three thousand, forty-four".