1345631025492 has 72 divisors (see below), whose sum is σ = 3687691480200. Its totient is φ = 411261500160.

The previous prime is 1345631025467. The next prime is 1345631025493. The reversal of 1345631025492 is 2945201365431.

1345631025492 is a `hidden beast` number, since 1 + 3 + 4 + 5 + 631 + 0 + 2 + 5 + 4 + 9 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 89895630276 + 1255735395216 = 299826^2 + 1120596^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345631025493) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9578859 + ... + 9718322.

It is an arithmetic number, because the mean of its divisors is an integer number (51217937225).

Almost surely, 2^{1345631025492} is an apocalyptic number.

1345631025492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1345631025492 is an abundant number, since it is smaller than the sum of its proper divisors (2342060454708).

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

1345631025492 is a wasteful number, since it uses less digits than its factorization.

1345631025492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19297353 (or 19297348 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 1345631025492 in words is "one trillion, three hundred forty-five billion, six hundred thirty-one million, twenty-five thousand, four hundred ninety-two".