253125449 has 4 divisors (see below), whose sum is σ = 253383936. Its totient is φ = 252866964.

The previous prime is 253125421. The next prime is 253125463. The reversal of 253125449 is 944521352.

253125449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 253125449 - 2¹² = 253121353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253125479) 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, 127769 + ... + 129734.

It is an arithmetic number, because the mean of its divisors is an integer number (63345984).

Almost surely, 2^253125449 is an apocalyptic number.

It is an amenable number.

253125449 is a deficient number, since it is larger than the sum of its proper divisors (258487).

253125449 is an equidigital number, since it uses as much as digits as its factorization.

253125449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258486.

The product of its digits is 43200, while the sum is 35.

The square root of 253125449 is about 15909.9166873997. The cubic root of 253125449 is about 632.5748730020.

The spelling of 253125449 in words is "two hundred fifty-three million, one hundred twenty-five thousand, four hundred forty-nine".