25603261233 has 64 divisors (see below), whose sum is σ = 41057280000. Its totient is φ = 14025186560.

The previous prime is 25603261231. The next prime is 25603261249. The reversal of 25603261233 is 33216230652.

It is not a de Polignac number, because 25603261233 - 2¹ = 25603261231 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 25603261194 and 25603261203.

It is not an unprimeable number, because it can be changed into a prime (25603261231) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 1022143 + ... + 1046891.

It is an arithmetic number, because the mean of its divisors is an integer number (641520000).

Almost surely, 2^25603261233 is an apocalyptic number.

25603261233 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

25603261233 is a deficient number, since it is larger than the sum of its proper divisors (15454018767).

25603261233 is a wasteful number, since it uses less digits than its factorization.

25603261233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24862.

The product of its (nonzero) digits is 38880, while the sum is 33.

Adding to 25603261233 its reverse (33216230652), we get a palindrome (58819491885).

The spelling of 25603261233 in words is "twenty-five billion, six hundred three million, two hundred sixty-one thousand, two hundred thirty-three".