72825491 has 2 divisors, whose sum is σ = 72825492. Its totient is φ = 72825490.

The previous prime is 72825469. The next prime is 72825517. The reversal of 72825491 is 19452827.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72825491 - 2²² = 68631187 is a prime.

It is not a weakly prime, because it can be changed into another prime (72825421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36412745 + 36412746.

It is an arithmetic number, because the mean of its divisors is an integer number (36412746).

Almost surely, 2^72825491 is an apocalyptic number.

72825491 is a deficient number, since it is larger than the sum of its proper divisors (1).

72825491 is an equidigital number, since it uses as much as digits as its factorization.

72825491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 38.

The square root of 72825491 is about 8533.7852679804. The cubic root of 72825491 is about 417.6006254639.

The spelling of 72825491 in words is "seventy-two million, eight hundred twenty-five thousand, four hundred ninety-one".