25043422040 has 64 divisors (see below), whose sum is σ = 69351024960. Its totient is φ = 7925829120.

The previous prime is 25043422021. The next prime is 25043422057. The reversal of 25043422040 is 4022434052.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

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 15 ways as a sum of consecutive naturals, for example, 3436391 + ... + 3443670.

It is an arithmetic number, because the mean of its divisors is an integer number (1083609765).

Almost surely, 2^25043422040 is an apocalyptic number.

25043422040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25043422040 is an abundant number, since it is smaller than the sum of its proper divisors (44307602920).

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

25043422040 is a wasteful number, since it uses less digits than its factorization.

25043422040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6880092 (or 6880088 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 26.

Adding to 25043422040 its reverse (4022434052), we get a palindrome (29065856092).

The spelling of 25043422040 in words is "twenty-five billion, forty-three million, four hundred twenty-two thousand, forty".