25312054215 has 96 divisors (see below), whose sum is σ = 48226268160. Its totient is φ = 11298583296.

The previous prime is 25312054213. The next prime is 25312054283. The reversal of 25312054215 is 51245021352.

It is not a de Polignac number, because 25312054215 - 2¹ = 25312054213 is a prime.

It is a super-3 number, since 3×25312054215³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25312054211) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 29466456 + ... + 29467314.

It is an arithmetic number, because the mean of its divisors is an integer number (502356960).

Almost surely, 2^25312054215 is an apocalyptic number.

25312054215 is a deficient number, since it is larger than the sum of its proper divisors (22914213945).

25312054215 is a wasteful number, since it uses less digits than its factorization.

25312054215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1781 (or 1774 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 25312054215 its reverse (51245021352), we get a palindrome (76557075567).

The spelling of 25312054215 in words is "twenty-five billion, three hundred twelve million, fifty-four thousand, two hundred fifteen".