25005440501 has 16 divisors (see below), whose sum is σ = 26212018560. Its totient is φ = 23823495360.

The previous prime is 25005440489. The next prime is 25005440527. The reversal of 25005440501 is 10504450052.

It is not a de Polignac number, because 25005440501 - 2²⁶ = 24938331637 is a prime.

It is a super-2 number, since 2×25005440501² (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 (25005440401) 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, 830531 + ... + 860111.

It is an arithmetic number, because the mean of its divisors is an integer number (1638251160).

Almost surely, 2^25005440501 is an apocalyptic number.

It is an amenable number.

25005440501 is a deficient number, since it is larger than the sum of its proper divisors (1206578059).

25005440501 is a wasteful number, since it uses less digits than its factorization.

25005440501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29996.

The product of its (nonzero) digits is 4000, while the sum is 26.

Adding to 25005440501 its reverse (10504450052), we get a palindrome (35509890553).

The spelling of 25005440501 in words is "twenty-five billion, five million, four hundred forty thousand, five hundred one".