25243331420 has 12 divisors (see below), whose sum is σ = 53010996024. Its totient is φ = 10097332560.

The previous prime is 25243331419. The next prime is 25243331431. The reversal of 25243331420 is 2413334252.

It is a happy number.

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 3 ways as a sum of consecutive naturals, for example, 631083266 + ... + 631083305.

It is an arithmetic number, because the mean of its divisors is an integer number (4417583002).

Almost surely, 2^25243331420 is an apocalyptic number.

25243331420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25243331420 is an abundant number, since it is smaller than the sum of its proper divisors (27767664604).

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

25243331420 is a wasteful number, since it uses less digits than its factorization.

25243331420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1262166580 (or 1262166578 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 25243331420 its reverse (2413334252), we get a palindrome (27656665672).

The spelling of 25243331420 in words is "twenty-five billion, two hundred forty-three million, three hundred thirty-one thousand, four hundred twenty".