25487078452 has 72 divisors (see below), whose sum is σ = 50322263040. Its totient is φ = 11282620800.

The previous prime is 25487078431. The next prime is 25487078459.

25487078452 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 25487078452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25487078459) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2881677 + ... + 2890507.

It is an arithmetic number, because the mean of its divisors is an integer number (698920320).

Almost surely, 2^25487078452 is an apocalyptic number.

25487078452 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25487078452 is a deficient number, since it is larger than the sum of its proper divisors (24835184588).

25487078452 is a wasteful number, since it uses less digits than its factorization.

25487078452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9013 (or 9000 counting only the distinct ones).

The product of its (nonzero) digits is 5017600, while the sum is 52.

The spelling of 25487078452 in words is "twenty-five billion, four hundred eighty-seven million, seventy-eight thousand, four hundred fifty-two".