1290226525 has 24 divisors (see below), whose sum is σ = 1830668544. Its totient is φ = 883646400.

The previous prime is 1290226493. The next prime is 1290226579. The reversal of 1290226525 is 5256220921.

It is not a de Polignac number, because 1290226525 - 2⁵ = 1290226493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 155379 + ... + 163471.

It is an arithmetic number, because the mean of its divisors is an integer number (76277856).

Almost surely, 2^1290226525 is an apocalyptic number.

It is an amenable number.

1290226525 is a deficient number, since it is larger than the sum of its proper divisors (540442019).

1290226525 is an equidigital number, since it uses as much as digits as its factorization.

1290226525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9021 (or 9016 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 1290226525 is about 35919.7233424758. The cubic root of 1290226525 is about 1088.6509486443.

The spelling of 1290226525 in words is "one billion, two hundred ninety million, two hundred twenty-six thousand, five hundred twenty-five".