201555425 has 12 divisors (see below), whose sum is σ = 250327356. Its totient is φ = 160987200.

The previous prime is 201555413. The next prime is 201555433. The reversal of 201555425 is 524555102.

201555425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 3055504 + 198499921 = 1748^2 + 14089^2 .

It is not a de Polignac number, because 201555425 - 2²⁶ = 134446561 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10427 + ... + 22623.

It is an arithmetic number, because the mean of its divisors is an integer number (20860613).

Almost surely, 2^201555425 is an apocalyptic number.

201555425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

201555425 is a deficient number, since it is larger than the sum of its proper divisors (48771931).

201555425 is a wasteful number, since it uses less digits than its factorization.

201555425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12868 (or 12863 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 201555425 is about 14197.0216947077. The cubic root of 201555425 is about 586.3156645139.

The spelling of 201555425 in words is "two hundred one million, five hundred fifty-five thousand, four hundred twenty-five".