25232040521 has 8 divisors (see below), whose sum is σ = 26201946624. Its totient is φ = 24271882560.

The previous prime is 25232040481. The next prime is 25232040539. The reversal of 25232040521 is 12504023252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25232040521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25232045521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2431760 + ... + 2442113.

It is an arithmetic number, because the mean of its divisors is an integer number (3275243328).

Almost surely, 2^25232040521 is an apocalyptic number.

It is an amenable number.

25232040521 is a deficient number, since it is larger than the sum of its proper divisors (969906103).

25232040521 is a wasteful number, since it uses less digits than its factorization.

25232040521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4874071.

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 25232040521 its reverse (12504023252), we get a palindrome (37736063773).

The spelling of 25232040521 in words is "twenty-five billion, two hundred thirty-two million, forty thousand, five hundred twenty-one".