25041440507 has 4 divisors (see below), whose sum is σ = 26359411080. Its totient is φ = 23723469936.

The previous prime is 25041440449. The next prime is 25041440539. The reversal of 25041440507 is 70504414052.

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 25041440507 - 2²² = 25037246203 is a prime.

It is a super-3 number, since 3×25041440507³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25041440807) 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, 658985258 + ... + 658985295.

It is an arithmetic number, because the mean of its divisors is an integer number (6589852770).

Almost surely, 2^25041440507 is an apocalyptic number.

25041440507 is a deficient number, since it is larger than the sum of its proper divisors (1317970573).

25041440507 is a wasteful number, since it uses less digits than its factorization.

25041440507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317970572.

The product of its (nonzero) digits is 22400, while the sum is 32.

Adding to 25041440507 its reverse (70504414052), we get a palindrome (95545854559).

The spelling of 25041440507 in words is "twenty-five billion, forty-one million, four hundred forty thousand, five hundred seven".