25389057803 has 4 divisors (see below), whose sum is σ = 25389531240. Its totient is φ = 25388584368.

The previous prime is 25389057797. The next prime is 25389057823. The reversal of 25389057803 is 30875098352.

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 25389057803 - 2³⁰ = 24315315979 is a prime.

It is a super-2 number, since 2×25389057803² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25389057823) 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, 144233 + ... + 267546.

It is an arithmetic number, because the mean of its divisors is an integer number (6347382810).

Almost surely, 2^25389057803 is an apocalyptic number.

25389057803 is a deficient number, since it is larger than the sum of its proper divisors (473437).

25389057803 is an equidigital number, since it uses as much as digits as its factorization.

25389057803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473436.

The product of its (nonzero) digits is 1814400, while the sum is 50.

The spelling of 25389057803 in words is "twenty-five billion, three hundred eighty-nine million, fifty-seven thousand, eight hundred three".