825372553 has 2 divisors, whose sum is σ = 825372554. Its totient is φ = 825372552.

The previous prime is 825372547. The next prime is 825372557. The reversal of 825372553 is 355273528.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 667292224 + 158080329 = 25832^2 + 12573^2 .

It is a cyclic number.

It is not a de Polignac number, because 825372553 - 2²⁵ = 791818121 is a prime.

It is not a weakly prime, because it can be changed into another prime (825372557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412686276 + 412686277.

It is an arithmetic number, because the mean of its divisors is an integer number (412686277).

Almost surely, 2^825372553 is an apocalyptic number.

It is an amenable number.

825372553 is a deficient number, since it is larger than the sum of its proper divisors (1).

825372553 is an equidigital number, since it uses as much as digits as its factorization.

825372553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252000, while the sum is 40.

The square root of 825372553 is about 28729.2978159926. The cubic root of 825372553 is about 938.0298835123.

The spelling of 825372553 in words is "eight hundred twenty-five million, three hundred seventy-two thousand, five hundred fifty-three".