1232453525440 has 28 divisors (see below), whose sum is σ = 2934779958216. Its totient is φ = 492981410048.

The previous prime is 1232453525411. The next prime is 1232453525507. The reversal of 1232453525440 is 445253542321.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 1232453525393 and 1232453525402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1925708314 + ... + 1925708953.

Almost surely, 2^{1232453525440} is an apocalyptic number.

1232453525440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1232453525440 is an abundant number, since it is smaller than the sum of its proper divisors (1702326432776).

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

1232453525440 is an equidigital number, since it uses as much as digits as its factorization.

1232453525440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3851417284 (or 3851417274 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 40.

The spelling of 1232453525440 in words is "one trillion, two hundred thirty-two billion, four hundred fifty-three million, five hundred twenty-five thousand, four hundred forty".