25324425633 has 64 divisors (see below), whose sum is σ = 39265909760. Its totient is φ = 14384418048.

The previous prime is 25324425613. The next prime is 25324425661. The reversal of 25324425633 is 33652442352.

It is not a de Polignac number, because 25324425633 - 2⁵ = 25324425601 is a prime.

It is a super-3 number, since 3×25324425633³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is the 159137-th Hogben number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25324425591 and 25324425600.

It is not an unprimeable number, because it can be changed into a prime (25324425613) by changing a digit.

It is a nontrivial repunit in base 159136.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17428335 + ... + 17429787.

It is an arithmetic number, because the mean of its divisors is an integer number (613529840).

Almost surely, 2^25324425633 is an apocalyptic number.

It is an amenable number.

25324425633 is a deficient number, since it is larger than the sum of its proper divisors (13941484127).

25324425633 is a wasteful number, since it uses less digits than its factorization.

25324425633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2078.

The product of its digits is 518400, while the sum is 39.

Adding to 25324425633 its reverse (33652442352), we get a palindrome (58976867985).

The spelling of 25324425633 in words is "twenty-five billion, three hundred twenty-four million, four hundred twenty-five thousand, six hundred thirty-three".