618881325 has 12 divisors (see below), whose sum is σ = 1023217248. Its totient is φ = 330070000.

The previous prime is 618881321. The next prime is 618881353. The reversal of 618881325 is 523188816.

It is not a de Polignac number, because 618881325 - 2² = 618881321 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618881321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4125801 + ... + 4125950.

It is an arithmetic number, because the mean of its divisors is an integer number (85268104).

Almost surely, 2^618881325 is an apocalyptic number.

It is an amenable number.

618881325 is a deficient number, since it is larger than the sum of its proper divisors (404335923).

618881325 is a wasteful number, since it uses less digits than its factorization.

618881325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8251764 (or 8251759 counting only the distinct ones).

The product of its digits is 92160, while the sum is 42.

The square root of 618881325 is about 24877.3255194364. The cubic root of 618881325 is about 852.1887421015.

The spelling of 618881325 in words is "six hundred eighteen million, eight hundred eighty-one thousand, three hundred twenty-five".