75144081725 has 24 divisors (see below), whose sum is σ = 94461710760. Its totient is φ = 59290880000.

The previous prime is 75144081707. The next prime is 75144081737. The reversal of 75144081725 is 52718044157.

It can be written as a sum of positive squares in 12 ways, for example, as 662596 + 75143419129 = 814^2 + 274123^2 .

It is not a de Polignac number, because 75144081725 - 2⁸ = 75144081469 is a prime.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

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, 850115 + ... + 934335.

It is an arithmetic number, because the mean of its divisors is an integer number (3935904615).

Almost surely, 2^75144081725 is an apocalyptic number.

It is an amenable number.

75144081725 is a deficient number, since it is larger than the sum of its proper divisors (19317629035).

75144081725 is a wasteful number, since it uses less digits than its factorization.

75144081725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84721 (or 84716 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 44.

The spelling of 75144081725 in words is "seventy-five billion, one hundred forty-four million, eighty-one thousand, seven hundred twenty-five".