1425023449 has 2 divisors, whose sum is σ = 1425023450. Its totient is φ = 1425023448.

The previous prime is 1425023441. The next prime is 1425023471. The reversal of 1425023449 is 9443205241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1045358224 + 379665225 = 32332^2 + 19485^2 .

It is a cyclic number.

It is not a de Polignac number, because 1425023449 - 2³ = 1425023441 is a prime.

It is not a weakly prime, because it can be changed into another prime (1425023441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 712511724 + 712511725.

It is an arithmetic number, because the mean of its divisors is an integer number (712511725).

Almost surely, 2^1425023449 is an apocalyptic number.

It is an amenable number.

1425023449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1425023449 is an equidigital number, since it uses as much as digits as its factorization.

1425023449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 1425023449 is about 37749.4827646684. The cubic root of 1425023449 is about 1125.3147297867.

The spelling of 1425023449 in words is "one billion, four hundred twenty-five million, twenty-three thousand, four hundred forty-nine".