75725261 has 4 divisors (see below), whose sum is σ = 77008800. Its totient is φ = 74441724.

The previous prime is 75725257. The next prime is 75725297. The reversal of 75725261 is 16252757.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 75725261 - 2² = 75725257 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75725201) 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, 641681 + ... + 641798.

It is an arithmetic number, because the mean of its divisors is an integer number (19252200).

Almost surely, 2^75725261 is an apocalyptic number.

It is an amenable number.

75725261 is a deficient number, since it is larger than the sum of its proper divisors (1283539).

75725261 is a wasteful number, since it uses less digits than its factorization.

75725261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283538.

The product of its digits is 29400, while the sum is 35.

The square root of 75725261 is about 8702.0262582918. The cubic root of 75725261 is about 423.0713272555.

The spelling of 75725261 in words is "seventy-five million, seven hundred twenty-five thousand, two hundred sixty-one".