74555589725 has 24 divisors (see below), whose sum is σ = 98032071528. Its totient is φ = 56052838400.

The previous prime is 74555589707. The next prime is 74555589737. The reversal of 74555589725 is 52798555547.

It can be written as a sum of positive squares in 12 ways, for example, as 4009042489 + 70546547236 = 63317^2 + 265606^2 .

It is a de Polignac number, because none of the positive numbers 2^k-74555589725 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 158165 + ... + 417285.

It is an arithmetic number, because the mean of its divisors is an integer number (4084669647).

Almost surely, 2^74555589725 is an apocalyptic number.

It is an amenable number.

74555589725 is a deficient number, since it is larger than the sum of its proper divisors (23476481803).

74555589725 is a wasteful number, since it uses less digits than its factorization.

74555589725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259825 (or 259820 counting only the distinct ones).

The product of its digits is 88200000, while the sum is 62.

The spelling of 74555589725 in words is "seventy-four billion, five hundred fifty-five million, five hundred eighty-nine thousand, seven hundred twenty-five".