25404005532 has 48 divisors (see below), whose sum is σ = 60751498752. Its totient is φ = 8258494080.

The previous prime is 25404005521. The next prime is 25404005533. The reversal of 25404005532 is 23550040452.

It is a self number, because there is not a number n which added to its sum of digits gives 25404005532.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25404005533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80032 + ... + 239192.

It is an arithmetic number, because the mean of its divisors is an integer number (1265656224).

Almost surely, 2^25404005532 is an apocalyptic number.

It is an amenable number.

25404005532 is an abundant number, since it is smaller than the sum of its proper divisors (35347493220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25404005532 is a wasteful number, since it uses less digits than its factorization.

25404005532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159498 (or 159496 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 30.

Adding to 25404005532 its reverse (23550040452), we get a palindrome (48954045984).

The spelling of 25404005532 in words is "twenty-five billion, four hundred four million, five thousand, five hundred thirty-two".