25642303303 has 4 divisors (see below), whose sum is σ = 25891257808. Its totient is φ = 25393348800.

The previous prime is 25642303213. The next prime is 25642303307. The reversal of 25642303303 is 30330324652.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25642303303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25642303307) 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, 124477098 + ... + 124477303.

It is an arithmetic number, because the mean of its divisors is an integer number (6472814452).

Almost surely, 2^25642303303 is an apocalyptic number.

25642303303 is a deficient number, since it is larger than the sum of its proper divisors (248954505).

25642303303 is a wasteful number, since it uses less digits than its factorization.

25642303303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248954504.

The product of its (nonzero) digits is 38880, while the sum is 31.

Adding to 25642303303 its reverse (30330324652), we get a palindrome (55972627955).

The spelling of 25642303303 in words is "twenty-five billion, six hundred forty-two million, three hundred three thousand, three hundred three".