25422443040 has 48 divisors (see below), whose sum is σ = 80080697088. Its totient is φ = 6779318016.

The previous prime is 25422443029. The next prime is 25422443071. The reversal of 25422443040 is 4034422452.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×25422443040² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 25422442989 and 25422443007.

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 7 ways as a sum of consecutive naturals, for example, 26481232 + ... + 26482191.

It is an arithmetic number, because the mean of its divisors is an integer number (1668347856).

Almost surely, 2^25422443040 is an apocalyptic number.

25422443040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25422443040 is an abundant number, since it is smaller than the sum of its proper divisors (54658254048).

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

25422443040 is a wasteful number, since it uses less digits than its factorization.

25422443040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52963441 (or 52963433 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 30.

Adding to 25422443040 its reverse (4034422452), we get a palindrome (29456865492).

The spelling of 25422443040 in words is "twenty-five billion, four hundred twenty-two million, four hundred forty-three thousand, forty".