25250485428 has 240 divisors, whose sum is σ = 78829707264. Its totient is φ = 6895990080.

The previous prime is 25250485367. The next prime is 25250485471. The reversal of 25250485428 is 82458405252.

25250485428 is a `hidden beast` number, since 2 + 52 + 50 + 4 + 8 + 542 + 8 = 666.

It is a super-3 number, since 3×25250485428³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 5833401 + ... + 5837727.

Almost surely, 2^25250485428 is an apocalyptic number.

25250485428 is a gapful number since it is divisible by the number (28) 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 25250485428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39414853632).

25250485428 is an abundant number, since it is smaller than the sum of its proper divisors (53579221836).

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

25250485428 is a wasteful number, since it uses less digits than its factorization.

25250485428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4464 (or 4453 counting only the distinct ones).

The product of its (nonzero) digits is 1024000, while the sum is 45.

The spelling of 25250485428 in words is "twenty-five billion, two hundred fifty million, four hundred eighty-five thousand, four hundred twenty-eight".