1625460449 has 2 divisors, whose sum is σ = 1625460450. Its totient is φ = 1625460448.

The previous prime is 1625460437. The next prime is 1625460461. The reversal of 1625460449 is 9440645261.

It is a balanced prime because it is at equal distance from previous prime (1625460437) and next prime (1625460461).

It can be written as a sum of positive squares in only one way, i.e., 1106759824 + 518700625 = 33268^2 + 22775^2 .

It is an emirp because it is prime and its reverse (9440645261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1625460449 - 2¹² = 1625456353 is a prime.

It is not a weakly prime, because it can be changed into another prime (1625460649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 812730224 + 812730225.

It is an arithmetic number, because the mean of its divisors is an integer number (812730225).

Almost surely, 2^1625460449 is an apocalyptic number.

It is an amenable number.

1625460449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1625460449 is an equidigital number, since it uses as much as digits as its factorization.

1625460449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 1625460449 is about 40316.9995039313. Note that the first 3 decimals coincide. The cubic root of 1625460449 is about 1175.7783764206.

The spelling of 1625460449 in words is "one billion, six hundred twenty-five million, four hundred sixty thousand, four hundred forty-nine".