25408228532 has 6 divisors (see below), whose sum is σ = 44464399938. Its totient is φ = 12704114264.

The previous prime is 25408228511. The next prime is 25408228541. The reversal of 25408228532 is 23582280452.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 24559904656 + 848323876 = 156716^2 + 29126^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25408228532.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3176028563 + ... + 3176028570.

It is an arithmetic number, because the mean of its divisors is an integer number (7410733323).

Almost surely, 2^25408228532 is an apocalyptic number.

It is an amenable number.

25408228532 is a deficient number, since it is larger than the sum of its proper divisors (19056171406).

25408228532 is a wasteful number, since it uses less digits than its factorization.

25408228532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6352057137 (or 6352057135 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 41.

The spelling of 25408228532 in words is "twenty-five billion, four hundred eight million, two hundred twenty-eight thousand, five hundred thirty-two".