25242245424 has 120 divisors (see below), whose sum is σ = 79722910800. Its totient is φ = 7385387520.

The previous prime is 25242245419. The next prime is 25242245429. The reversal of 25242245424 is 42454224252.

25242245424 is a `hidden beast` number, since 2 + 5 + 2 + 4 + 224 + 5 + 424 = 666.

It is an interprime number because it is at equal distance from previous prime (25242245419) and next prime (25242245429).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (25242245429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 228819 + ... + 320690.

It is an arithmetic number, because the mean of its divisors is an integer number (664357590).

Almost surely, 2^25242245424 is an apocalyptic number.

25242245424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25242245424 is an abundant number, since it is smaller than the sum of its proper divisors (54480665376).

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

25242245424 is a wasteful number, since it uses less digits than its factorization.

25242245424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549563 (or 549554 counting only the distinct ones).

The product of its digits is 204800, while the sum is 36.

Adding to 25242245424 its reverse (42454224252), we get a palindrome (67696469676).

The spelling of 25242245424 in words is "twenty-five billion, two hundred forty-two million, two hundred forty-five thousand, four hundred twenty-four".