25231290471240 has 64 divisors (see below), whose sum is σ = 86507281618560. Its totient is φ = 5767152107520.

The previous prime is 25231290471221. The next prime is 25231290471271. The reversal of 25231290471240 is 4217409213252.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 25231290471192 and 25231290471201.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15018624441 + ... + 15018626120.

It is an arithmetic number, because the mean of its divisors is an integer number (1351676275290).

Almost surely, 2^{25231290471240} is an apocalyptic number.

25231290471240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25231290471240 is an abundant number, since it is smaller than the sum of its proper divisors (61275991147320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25231290471240 is a wasteful number, since it uses less digits than its factorization.

25231290471240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30037250582 (or 30037250578 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

Adding to 25231290471240 its reverse (4217409213252), we get a palindrome (29448699684492).

The spelling of 25231290471240 in words is "twenty-five trillion, two hundred thirty-one billion, two hundred ninety million, four hundred seventy-one thousand, two hundred forty".