1225657453 has 6 divisors (see below), whose sum is σ = 1293561294. Its totient is φ = 1161148824.

The previous prime is 1225657441. The next prime is 1225657457. The reversal of 1225657453 is 3547565221.

It can be written as a sum of positive squares in only one way, i.e., 1224860004 + 797449 = 34998^2 + 893^2 .

It is not a de Polignac number, because 1225657453 - 2⁹ = 1225656941 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 (1225657457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1697226 + ... + 1697947.

It is an arithmetic number, because the mean of its divisors is an integer number (215593549).

Almost surely, 2^1225657453 is an apocalyptic number.

It is an amenable number.

1225657453 is a deficient number, since it is larger than the sum of its proper divisors (67903841).

1225657453 is an equidigital number, since it uses as much as digits as its factorization.

1225657453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3395211 (or 3395192 counting only the distinct ones).

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

The square root of 1225657453 is about 35009.3909258644. The cubic root of 1225657453 is about 1070.1788657807.

The spelling of 1225657453 in words is "one billion, two hundred twenty-five million, six hundred fifty-seven thousand, four hundred fifty-three".