90725219 has 8 divisors (see below), whose sum is σ = 97955760. Its totient is φ = 83530656.

The previous prime is 90725207. The next prime is 90725233. The reversal of 90725219 is 91252709.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90725219 - 2¹² = 90721123 is a prime.

It is a super-2 number, since 2×90725219² = 16462130725195922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90725249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3629 + ... + 13950.

It is an arithmetic number, because the mean of its divisors is an integer number (12244470).

Almost surely, 2^90725219 is an apocalyptic number.

90725219 is a deficient number, since it is larger than the sum of its proper divisors (7230541).

90725219 is a wasteful number, since it uses less digits than its factorization.

90725219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17989.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 90725219 is about 9524.9786876402. The cubic root of 90725219 is about 449.3409595637.

The spelling of 90725219 in words is "ninety million, seven hundred twenty-five thousand, two hundred nineteen".