25422419072 has 72 divisors (see below), whose sum is σ = 53865638235. Its totient is φ = 11949060096.

The previous prime is 25422419069. The next prime is 25422419093. The reversal of 25422419072 is 27091422452.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 5 ways, for example, as 21308992576 + 4113426496 = 145976^2 + 64136^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=112744.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 30665954 + ... + 30666782.

Almost surely, 2^25422419072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25422419072

25422419072 is an abundant number, since it is smaller than the sum of its proper divisors (28443219163).

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

25422419072 is an frugal number, since it uses more digits than its factorization.

25422419072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1706 (or 848 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 25422419072 in words is "twenty-five billion, four hundred twenty-two million, four hundred nineteen thousand, seventy-two".