25990004735 has 4 divisors (see below), whose sum is σ = 31188005688. Its totient is φ = 20792003784.

The previous prime is 25990004723. The next prime is 25990004737. The reversal of 25990004735 is 53740009952.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25990004735 - 2⁶ = 25990004671 is a prime.

It is a super-2 number, since 2×25990004735² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25990004737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2599000469 + ... + 2599000478.

It is an arithmetic number, because the mean of its divisors is an integer number (7797001422).

Almost surely, 2^25990004735 is an apocalyptic number.

25990004735 is a deficient number, since it is larger than the sum of its proper divisors (5198000953).

25990004735 is an equidigital number, since it uses as much as digits as its factorization.

25990004735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5198000952.

The product of its (nonzero) digits is 340200, while the sum is 44.

The spelling of 25990004735 in words is "twenty-five billion, nine hundred ninety million, four thousand, seven hundred thirty-five".