1325451134520 has 64 divisors (see below), whose sum is σ = 4418170452000. Its totient is φ = 353453635584.

The previous prime is 1325451134507. The next prime is 1325451134537. The reversal of 1325451134520 is 254311545231.

1325451134520 is a `hidden beast` number, since 1 + 3 + 2 + 54 + 51 + 1 + 34 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 613633705 + ... + 613635864.

Almost surely, 2^{1325451134520} is an apocalyptic number.

1325451134520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1325451134520 is an abundant number, since it is smaller than the sum of its proper divisors (3092719317480).

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

1325451134520 is a wasteful number, since it uses less digits than its factorization.

1325451134520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227269589 (or 1227269579 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

Adding to 1325451134520 its reverse (254311545231), we get a palindrome (1579762679751).

The spelling of 1325451134520 in words is "one trillion, three hundred twenty-five billion, four hundred fifty-one million, one hundred thirty-four thousand, five hundred twenty".