1357842520225 has 27 divisors (see below), whose sum is σ = 1788723871147. Its totient is φ = 1022300967680.

The previous prime is 1357842520213. The next prime is 1357842520297. The reversal of 1357842520225 is 5220252487531.

It is a happy number.

The square root of 1357842520225 is 1165265.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 67291991649 + 1290550528576 = 259407^2 + 1136024^2 .

It is not a de Polignac number, because 1357842520225 - 2³⁵ = 1323482781857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 99040671 + ... + 99054379.

Almost surely, 2^{1357842520225} is an apocalyptic number.

1357842520225 is the 1165265-th square number.

1357842520225 is the 582633-rd centered octagonal number.

It is an amenable number.

1357842520225 is a deficient number, since it is larger than the sum of its proper divisors (430881350922).

1357842520225 is an frugal number, since it uses more digits than its factorization.

1357842520225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27462 (or 13731 counting only the distinct ones).

The product of its (nonzero) digits is 1344000, while the sum is 46.

The spelling of 1357842520225 in words is "one trillion, three hundred fifty-seven billion, eight hundred forty-two million, five hundred twenty thousand, two hundred twenty-five".