25505035738 has 96 divisors (see below), whose sum is σ = 50756630400. Its totient is φ = 9334217088.

The previous prime is 25505035729. The next prime is 25505035747. The reversal of 25505035738 is 83753050552.

It is an interprime number because it is at equal distance from previous prime (25505035729) and next prime (25505035747).

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a junction number, because it is equal to n+sod(n) for n = 25505035694 and 25505035703.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6391848 + ... + 6395836.

It is an arithmetic number, because the mean of its divisors is an integer number (528714900).

Almost surely, 2^25505035738 is an apocalyptic number.

25505035738 is a deficient number, since it is larger than the sum of its proper divisors (25251594662).

25505035738 is a wasteful number, since it uses less digits than its factorization.

25505035738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4116 (or 4073 counting only the distinct ones).

The product of its (nonzero) digits is 630000, while the sum is 43.

The spelling of 25505035738 in words is "twenty-five billion, five hundred five million, thirty-five thousand, seven hundred thirty-eight".