1290228427025 has 54 divisors (see below), whose sum is σ = 1741816510098. Its totient is φ = 947317683200.

The previous prime is 1290228427003. The next prime is 1290228427027. The reversal of 1290228427025 is 5207248220921.

It can be written as a sum of positive squares in 9 ways, for example, as 319877342929 + 970351084096 = 565577^2 + 985064^2 .

It is not a de Polignac number, because 1290228427025 - 2²⁸ = 1289959991569 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 (1290228427027) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 618220532 + ... + 618222618.

Almost surely, 2^{1290228427025} is an apocalyptic number.

It is an amenable number.

1290228427025 is a deficient number, since it is larger than the sum of its proper divisors (451588083073).

1290228427025 is an frugal number, since it uses more digits than its factorization.

1290228427025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4259 (or 2150 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 44.

The spelling of 1290228427025 in words is "one trillion, two hundred ninety billion, two hundred twenty-eight million, four hundred twenty-seven thousand, twenty-five".