74564537250 has 576 divisors, whose sum is σ = 238270885632. Its totient is φ = 15429120000.

The previous prime is 74564537249. The next prime is 74564537261. The reversal of 74564537250 is 5273546547.

It is a self number, because there is not a number n which added to its sum of digits gives 74564537250.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 1050204715 + ... + 1050204785.

It is an arithmetic number, because the mean of its divisors is an integer number (413664732).

Almost surely, 2^74564537250 is an apocalyptic number.

74564537250 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 74564537250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119135442816).

74564537250 is an abundant number, since it is smaller than the sum of its proper divisors (163706348382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74564537250 is a wasteful number, since it uses less digits than its factorization.

74564537250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 3528000, while the sum is 48.

The spelling of 74564537250 in words is "seventy-four billion, five hundred sixty-four million, five hundred thirty-seven thousand, two hundred fifty".