1325135772 has 36 divisors (see below), whose sum is σ = 3525947880. Its totient is φ = 418463712.

The previous prime is 1325135761. The next prime is 1325135783. The reversal of 1325135772 is 2775315231.

It is a happy number.

1325135772 is a `hidden beast` number, since 1 + 32 + 51 + 3 + 577 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (1325135761) and next prime (1325135783).

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 967983 + ... + 969350.

Almost surely, 2^1325135772 is an apocalyptic number.

1325135772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1325135772 is an abundant number, since it is smaller than the sum of its proper divisors (2200812108).

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

1325135772 is a wasteful number, since it uses less digits than its factorization.

1325135772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1937362 (or 1937357 counting only the distinct ones).

The product of its digits is 44100, while the sum is 36.

The square root of 1325135772 is about 36402.4143704782. The cubic root of 1325135772 is about 1098.3821318163.

The spelling of 1325135772 in words is "one billion, three hundred twenty-five million, one hundred thirty-five thousand, seven hundred seventy-two".