25554245511031 has 4 divisors (see below), whose sum is σ = 25593742027152. Its totient is φ = 25514748994912.

The previous prime is 25554245511001. The next prime is 25554245511101. The reversal of 25554245511031 is 13011554245552.

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-25554245511031 is a prime.

It is a super-2 number, since 2×25554245511031² (a number of 28 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 (25554245511001) 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, 19748257090 + ... + 19748258383.

It is an arithmetic number, because the mean of its divisors is an integer number (6398435506788).

Almost surely, 2^{25554245511031} is an apocalyptic number.

25554245511031 is a deficient number, since it is larger than the sum of its proper divisors (39496516121).

25554245511031 is an equidigital number, since it uses as much as digits as its factorization.

25554245511031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39496516120.

The product of its (nonzero) digits is 600000, while the sum is 43.

Adding to 25554245511031 its reverse (13011554245552), we get a palindrome (38565799756583).

The spelling of 25554245511031 in words is "twenty-five trillion, five hundred fifty-four billion, two hundred forty-five million, five hundred eleven thousand, thirty-one".