75105725730 has 64 divisors (see below), whose sum is σ = 206370505728. Its totient is φ = 17136504000.

The previous prime is 75105725699. The next prime is 75105725753. The reversal of 75105725730 is 3752750157.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 199396 + ... + 435855.

It is an arithmetic number, because the mean of its divisors is an integer number (3224539152).

Almost surely, 2^75105725730 is an apocalyptic number.

75105725730 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

75105725730 is an abundant number, since it is smaller than the sum of its proper divisors (131264779998).

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

75105725730 is a wasteful number, since it uses less digits than its factorization.

75105725730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635831.

The product of its (nonzero) digits is 257250, while the sum is 42.

The spelling of 75105725730 in words is "seventy-five billion, one hundred five million, seven hundred twenty-five thousand, seven hundred thirty".