25223478408 has 180 divisors, whose sum is σ = 75254435685. Its totient is φ = 7891686144.

The previous prime is 25223478407. The next prime is 25223478419. The reversal of 25223478408 is 80487432252.

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.

25223478408 is a `hidden beast` number, since 2 + 5 + 2 + 234 + 7 + 8 + 408 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 23085155844 + 2138322564 = 151938^2 + 46242^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=112302.

It is a super-3 number, since 3×25223478408³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (25223478407) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 68728641 + ... + 68729007.

Almost surely, 2^25223478408 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 25223478408

25223478408 is an abundant number, since it is smaller than the sum of its proper divisors (50030957277).

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

25223478408 is an equidigital number, since it uses as much as digits as its factorization.

25223478408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786 (or 389 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 45.

The spelling of 25223478408 in words is "twenty-five billion, two hundred twenty-three million, four hundred seventy-eight thousand, four hundred eight".