25293232462540 has 192 divisors, whose sum is σ = 62814301562880. Its totient is φ = 8375925841920.

The previous prime is 25293232462471. The next prime is 25293232462549. The reversal of 25293232462540 is 4526423239252.

It is not an unprimeable number, because it can be changed into a prime (25293232462549) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 354514191 + ... + 354585529.

It is an arithmetic number, because the mean of its divisors is an integer number (327157820640).

Almost surely, 2^{25293232462540} is an apocalyptic number.

25293232462540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25293232462540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31407150781440).

25293232462540 is an abundant number, since it is smaller than the sum of its proper divisors (37521069100340).

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

25293232462540 is a wasteful number, since it uses less digits than its factorization.

25293232462540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72152 (or 72150 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 49.

The spelling of 25293232462540 in words is "twenty-five trillion, two hundred ninety-three billion, two hundred thirty-two million, four hundred sixty-two thousand, five hundred forty".