1325693628 has 240 divisors, whose sum is σ = 4119808000. Its totient is φ = 371498400.

The previous prime is 1325693599. The next prime is 1325693657. The reversal of 1325693628 is 8263965231.

1325693628 is a `hidden beast` number, since 1 + 32 + 569 + 36 + 28 = 666.

It is an interprime number because it is at equal distance from previous prime (1325693599) and next prime (1325693657).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 8779353 + ... + 8779503.

Almost surely, 2^1325693628 is an apocalyptic number.

1325693628 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1325693628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2059904000).

1325693628 is an abundant number, since it is smaller than the sum of its proper divisors (2794114372).

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

1325693628 is a wasteful number, since it uses less digits than its factorization.

1325693628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267 (or 242 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 1325693628 is about 36410.0759131315. The cubic root of 1325693628 is about 1098.5362425904.

The spelling of 1325693628 in words is "one billion, three hundred twenty-five million, six hundred ninety-three thousand, six hundred twenty-eight".