25415322021340 has 48 divisors (see below), whose sum is σ = 53538564197664. Its totient is φ = 10134444902400.

The previous prime is 25415322021311. The next prime is 25415322021347. The reversal of 25415322021340 is 4312022351452.

It is a junction number, because it is equal to n+sod(n) for n = 25415322021296 and 25415322021305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25415322021347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45290275 + ... + 45848005.

It is an arithmetic number, because the mean of its divisors is an integer number (1115386754118).

Almost surely, 2^{25415322021340} is an apocalyptic number.

25415322021340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25415322021340 is an abundant number, since it is smaller than the sum of its proper divisors (28123242176324).

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

25415322021340 is a wasteful number, since it uses less digits than its factorization.

25415322021340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564838 (or 564836 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 25415322021340 its reverse (4312022351452), we get a palindrome (29727344372792).

The spelling of 25415322021340 in words is "twenty-five trillion, four hundred fifteen billion, three hundred twenty-two million, twenty-one thousand, three hundred forty".