25239445052 has 6 divisors (see below), whose sum is σ = 44169028848. Its totient is φ = 12619722524.

The previous prime is 25239445051. The next prime is 25239445109. The reversal of 25239445052 is 25054493252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25239445051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3154930628 + ... + 3154930635.

It is an arithmetic number, because the mean of its divisors is an integer number (7361504808).

Almost surely, 2^25239445052 is an apocalyptic number.

It is an amenable number.

25239445052 is a deficient number, since it is larger than the sum of its proper divisors (18929583796).

25239445052 is a wasteful number, since it uses less digits than its factorization.

25239445052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6309861267 (or 6309861265 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 25239445052 in words is "twenty-five billion, two hundred thirty-nine million, four hundred forty-five thousand, fifty-two".