1825213253 has 4 divisors (see below), whose sum is σ = 1825300128. Its totient is φ = 1825126380.

The previous prime is 1825213193. The next prime is 1825213261. The reversal of 1825213253 is 3523125281.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1825213253 - 2¹² = 1825209157 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 (1825212253) 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, 9950 + ... + 61232.

It is an arithmetic number, because the mean of its divisors is an integer number (456325032).

Almost surely, 2^1825213253 is an apocalyptic number.

It is an amenable number.

1825213253 is a deficient number, since it is larger than the sum of its proper divisors (86875).

1825213253 is an equidigital number, since it uses as much as digits as its factorization.

1825213253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86874.

The product of its digits is 14400, while the sum is 32.

The square root of 1825213253 is about 42722.5145912550. The cubic root of 1825213253 is about 1222.0937916587.

The spelling of 1825213253 in words is "one billion, eight hundred twenty-five million, two hundred thirteen thousand, two hundred fifty-three".