74507781325 has 24 divisors (see below), whose sum is σ = 97272578720. Its totient is φ = 56457259200.

The previous prime is 74507781323. The next prime is 74507781353. The reversal of 74507781325 is 52318770547.

It is a happy number.

It is not a de Polignac number, because 74507781325 - 2¹ = 74507781323 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74507781323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2751502 + ... + 2778448.

Almost surely, 2^74507781325 is an apocalyptic number.

It is an amenable number.

74507781325 is a deficient number, since it is larger than the sum of its proper divisors (22764797395).

74507781325 is a wasteful number, since it uses less digits than its factorization.

74507781325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32797 (or 32792 counting only the distinct ones).

The product of its (nonzero) digits is 1646400, while the sum is 49.

The spelling of 74507781325 in words is "seventy-four billion, five hundred seven million, seven hundred eighty-one thousand, three hundred twenty-five".