25239657532 has 12 divisors (see below), whose sum is σ = 46494106120. Its totient is φ = 11955627216.

The previous prime is 25239657517. The next prime is 25239657539. The reversal of 25239657532 is 23575693252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25239657539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166050303 + ... + 166050454.

Almost surely, 2^25239657532 is an apocalyptic number.

It is an amenable number.

25239657532 is a deficient number, since it is larger than the sum of its proper divisors (21254448588).

25239657532 is a wasteful number, since it uses less digits than its factorization.

25239657532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332100780 (or 332100778 counting only the distinct ones).

The product of its digits is 3402000, while the sum is 49.

The spelling of 25239657532 in words is "twenty-five billion, two hundred thirty-nine million, six hundred fifty-seven thousand, five hundred thirty-two".