25040553431 has 4 divisors (see below), whose sum is σ = 25061544192. Its totient is φ = 25019562672.

The previous prime is 25040553389. The next prime is 25040553457. The reversal of 25040553431 is 13435504052.

It is a happy number.

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-25040553431 is a prime.

It is a super-2 number, since 2×25040553431² (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 (25040552431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10493591 + ... + 10495976.

It is an arithmetic number, because the mean of its divisors is an integer number (6265386048).

Almost surely, 2^25040553431 is an apocalyptic number.

25040553431 is a deficient number, since it is larger than the sum of its proper divisors (20990761).

25040553431 is a wasteful number, since it uses less digits than its factorization.

25040553431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20990760.

The product of its (nonzero) digits is 36000, while the sum is 32.

The spelling of 25040553431 in words is "twenty-five billion, forty million, five hundred fifty-three thousand, four hundred thirty-one".