25293078426 has 288 divisors, whose sum is σ = 71089159680. Its totient is φ = 5949599040.

The previous prime is 25293078401. The next prime is 25293078439. The reversal of 25293078426 is 62487039252.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 15545025 + ... + 15546651.

It is an arithmetic number, because the mean of its divisors is an integer number (246837360).

Almost surely, 2^25293078426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25293078426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35544579840).

25293078426 is an abundant number, since it is smaller than the sum of its proper divisors (45796081254).

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

25293078426 is a wasteful number, since it uses less digits than its factorization.

25293078426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1710 (or 1692 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 25293078426 in words is "twenty-five billion, two hundred ninety-three million, seventy-eight thousand, four hundred twenty-six".