74816531619025 has 81 divisors (see below), whose sum is σ = 113906680638939. Its totient is φ = 48598882385760.

The previous prime is 74816531619017. The next prime is 74816531619079. The reversal of 74816531619025 is 52091613561847.

The square root of 74816531619025 is 8649655.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 26933951382849 + 47882580236176 = 5189793^2 + 6919724^2 .

It is not a de Polignac number, because 74816531619025 - 2³ = 74816531619017 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 5752014072 + ... + 5752027078.

It is a 1-persistent number, because it is pandigital, but 2⋅74816531619025 = 149633063238050 is not.

Almost surely, 2^{74816531619025} is an apocalyptic number.

74816531619025 is the 8649655-th square number.

74816531619025 is the 4324828-th centered octagonal number.

It is an amenable number.

74816531619025 is a deficient number, since it is larger than the sum of its proper divisors (39090149019914).

74816531619025 is an frugal number, since it uses more digits than its factorization.

74816531619025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26076 (or 13038 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 58.

The spelling of 74816531619025 in words is "seventy-four trillion, eight hundred sixteen billion, five hundred thirty-one million, six hundred nineteen thousand, twenty-five".