25722782029440 has 1792 divisors, whose sum is σ = 99267562506240. Its totient is φ = 6358354329600.

The previous prime is 25722782029423. The next prime is 25722782029459. The reversal of 25722782029440 is 4492028722752.

It is a happy number.

25722782029440 is a `hidden beast` number, since 2 + 57 + 227 + 82 + 0 + 294 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 37995246382 + ... + 37995247058.

Almost surely, 2^{25722782029440} is an apocalyptic number.

25722782029440 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 25722782029440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49633781253120).

25722782029440 is an abundant number, since it is smaller than the sum of its proper divisors (73544780476800).

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

25722782029440 is an equidigital number, since it uses as much as digits as its factorization.

25722782029440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853 (or 826 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 54.

The spelling of 25722782029440 in words is "twenty-five trillion, seven hundred twenty-two billion, seven hundred eighty-two million, twenty-nine thousand, four hundred forty".