25261794503 has 16 divisors (see below), whose sum is σ = 27979615104. Its totient is φ = 22614435360.

The previous prime is 25261794497. The next prime is 25261794517. The reversal of 25261794503 is 30549716252.

It is not a de Polignac number, because 25261794503 - 2⁸ = 25261794247 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 (25261794553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3207176 + ... + 3215042.

It is an arithmetic number, because the mean of its divisors is an integer number (1748725944).

Almost surely, 2^25261794503 is an apocalyptic number.

25261794503 is a deficient number, since it is larger than the sum of its proper divisors (2717820601).

25261794503 is a wasteful number, since it uses less digits than its factorization.

25261794503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12302.

The product of its (nonzero) digits is 453600, while the sum is 44.

The spelling of 25261794503 in words is "twenty-five billion, two hundred sixty-one million, seven hundred ninety-four thousand, five hundred three".