7547725641 has 4 divisors (see below), whose sum is σ = 10063634192. Its totient is φ = 5031817092.

The previous prime is 7547725631. The next prime is 7547725663. The reversal of 7547725641 is 1465277457.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 7547725641 - 2¹³ = 7547717449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7547725631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1257954271 + ... + 1257954276.

It is an arithmetic number, because the mean of its divisors is an integer number (2515908548).

Almost surely, 2^7547725641 is an apocalyptic number.

It is an amenable number.

7547725641 is a deficient number, since it is larger than the sum of its proper divisors (2515908551).

7547725641 is a wasteful number, since it uses less digits than its factorization.

7547725641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2515908550.

The product of its digits is 1646400, while the sum is 48.

The square root of 7547725641 is about 86877.6475337586. The cubic root of 7547725641 is about 1961.5770350276.

The spelling of 7547725641 in words is "seven billion, five hundred forty-seven million, seven hundred twenty-five thousand, six hundred forty-one".