72825261 has 4 divisors (see below), whose sum is σ = 97100352. Its totient is φ = 48550172.

The previous prime is 72825257. The next prime is 72825299. The reversal of 72825261 is 16252827.

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 72825261 - 2² = 72825257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72825211) 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, 12137541 + ... + 12137546.

It is an arithmetic number, because the mean of its divisors is an integer number (24275088).

Almost surely, 2^72825261 is an apocalyptic number.

It is an amenable number.

72825261 is a deficient number, since it is larger than the sum of its proper divisors (24275091).

72825261 is a wasteful number, since it uses less digits than its factorization.

72825261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24275090.

The product of its digits is 13440, while the sum is 33.

The square root of 72825261 is about 8533.7717921210. The cubic root of 72825261 is about 417.6001858365.

The spelling of 72825261 in words is "seventy-two million, eight hundred twenty-five thousand, two hundred sixty-one".