25148283840 has 392 divisors, whose sum is σ = 91182169680. Its totient is φ = 6602010624.

The previous prime is 25148283827. The next prime is 25148283883. The reversal of 25148283840 is 4838284152.

25148283840 is a `hidden beast` number, since 2 + 51 + 482 + 83 + 8 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 15628956 + ... + 15630564.

Almost surely, 2^25148283840 is an apocalyptic number.

25148283840 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 25148283840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45591084840).

25148283840 is an abundant number, since it is smaller than the sum of its proper divisors (66033885840).

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

25148283840 is an equidigital number, since it uses as much as digits as its factorization.

25148283840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1711 (or 1686 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 45.

The spelling of 25148283840 in words is "twenty-five billion, one hundred forty-eight million, two hundred eighty-three thousand, eight hundred forty".