74773255525 has 6 divisors (see below), whose sum is σ = 92718836882. Its totient is φ = 59818604400.

The previous prime is 74773255523. The next prime is 74773255537. The reversal of 74773255525 is 52555237747.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 12054063681 + 62719191844 = 109791^2 + 250438^2 .

It is not a de Polignac number, because 74773255525 - 2¹ = 74773255523 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74773255523) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1495465086 + ... + 1495465135.

Almost surely, 2^74773255525 is an apocalyptic number.

It is an amenable number.

74773255525 is a deficient number, since it is larger than the sum of its proper divisors (17945581357).

74773255525 is a wasteful number, since it uses less digits than its factorization.

74773255525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2990930231 (or 2990930226 counting only the distinct ones).

The product of its digits is 10290000, while the sum is 52.

The spelling of 74773255525 in words is "seventy-four billion, seven hundred seventy-three million, two hundred fifty-five thousand, five hundred twenty-five".