25442426356 has 12 divisors (see below), whose sum is σ = 44525682180. Its totient is φ = 12720802880.

The previous prime is 25442426353. The next prime is 25442426381. The reversal of 25442426356 is 65362424452.

It can be written as a sum of positive squares in 2 ways, for example, as 12596470756 + 12845955600 = 112234^2 + 113340^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25442426353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68736 + ... + 235816.

It is an arithmetic number, because the mean of its divisors is an integer number (3710473515).

Almost surely, 2^25442426356 is an apocalyptic number.

It is an amenable number.

25442426356 is a deficient number, since it is larger than the sum of its proper divisors (19083255824).

25442426356 is a wasteful number, since it uses less digits than its factorization.

25442426356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205154 (or 205152 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 43.

The spelling of 25442426356 in words is "twenty-five billion, four hundred forty-two million, four hundred twenty-six thousand, three hundred fifty-six".