25020054536 has 8 divisors (see below), whose sum is σ = 46912602270. Its totient is φ = 12510027264.

The previous prime is 25020054517. The next prime is 25020054547. The reversal of 25020054536 is 63545002052.

It can be written as a sum of positive squares in only one way, i.e., 17484772900 + 7535281636 = 132230^2 + 86806^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1563753401 + ... + 1563753416.

Almost surely, 2^25020054536 is an apocalyptic number.

It is an amenable number.

25020054536 is a deficient number, since it is larger than the sum of its proper divisors (21892547734).

25020054536 is a wasteful number, since it uses less digits than its factorization.

25020054536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3127506823 (or 3127506819 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 32.

Adding to 25020054536 its reverse (63545002052), we get a palindrome (88565056588).

The spelling of 25020054536 in words is "twenty-five billion, twenty million, fifty-four thousand, five hundred thirty-six".