25000055000031 has 8 divisors (see below), whose sum is σ = 34234309549744. Its totient is φ = 16216251891840.

The previous prime is 25000055000021. The next prime is 25000055000033. The reversal of 25000055000031 is 13000055000052.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25000055000031 - 2¹³ = 25000054991839 is a prime.

It is a super-2 number, since 2×25000055000031² (a number of 28 digits) contains 22 as substring.

It is the 5000006-th Hogben number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25000054999971 and 25000055000007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25000055000033) by changing a digit.

It is a nontrivial repunit in base 5000005.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112612860250 + ... + 112612860471.

It is an arithmetic number, because the mean of its divisors is an integer number (4279288693718).

Almost surely, 2^{25000055000031} is an apocalyptic number.

25000055000031 is a deficient number, since it is larger than the sum of its proper divisors (9234254549713).

25000055000031 is a wasteful number, since it uses less digits than its factorization.

25000055000031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225225720761.

The product of its (nonzero) digits is 750, while the sum is 21.

Adding to 25000055000031 its sum of digits (21), we get a palindrome (25000055000052).

The spelling of 25000055000031 in words is "twenty-five trillion, fifty-five million, thirty-one", and thus it is an aban number and an uban number.