25498421496 has 192 divisors, whose sum is σ = 73618646400. Its totient is φ = 7950369024.

The previous prime is 25498421471. The next prime is 25498421497. The reversal of 25498421496 is 69412489452.

25498421496 is a `hidden beast` number, since 2 + 5 + 498 + 4 + 2 + 149 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25498421497) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 48753891 + ... + 48754413.

It is an arithmetic number, because the mean of its divisors is an integer number (383430450).

Almost surely, 2^25498421496 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25498421496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36809323200).

25498421496 is an abundant number, since it is smaller than the sum of its proper divisors (48120224904).

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

25498421496 is a wasteful number, since it uses less digits than its factorization.

25498421496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938 (or 931 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 54.

The spelling of 25498421496 in words is "twenty-five billion, four hundred ninety-eight million, four hundred twenty-one thousand, four hundred ninety-six".