1231525012760 has 64 divisors (see below), whose sum is σ = 3174300947520. Its totient is φ = 421234168320.

The previous prime is 1231525012747. The next prime is 1231525012763. The reversal of 1231525012760 is 672105251321.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 1231525012760.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231525012763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5105759 + ... + 5341518.

It is an arithmetic number, because the mean of its divisors is an integer number (49598452305).

Almost surely, 2^{1231525012760} is an apocalyptic number.

1231525012760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231525012760 is an abundant number, since it is smaller than the sum of its proper divisors (1942775934760).

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

1231525012760 is a wasteful number, since it uses less digits than its factorization.

1231525012760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10447716 (or 10447712 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 35.

The spelling of 1231525012760 in words is "one trillion, two hundred thirty-one billion, five hundred twenty-five million, twelve thousand, seven hundred sixty".