525455901 has 12 divisors (see below), whose sum is σ = 785164380. Its totient is φ = 338224320.

The previous prime is 525455899. The next prime is 525455923. The reversal of 525455901 is 109554525.

525455901 is a `hidden beast` number, since 5 + 25 + 45 + 590 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 393228900 + 132227001 = 19830^2 + 11499^2 .

It is not a de Polignac number, because 525455901 - 2¹ = 525455899 is a prime.

It is a super-2 number, since 2×525455901² = 552207807791443602, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525455951) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1006360 + ... + 1006881.

It is an arithmetic number, because the mean of its divisors is an integer number (65430365).

Almost surely, 2^525455901 is an apocalyptic number.

It is an amenable number.

525455901 is a deficient number, since it is larger than the sum of its proper divisors (259708479).

525455901 is a wasteful number, since it uses less digits than its factorization.

525455901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2013276 (or 2013273 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The square root of 525455901 is about 22922.8248913610. The cubic root of 525455901 is about 806.9477677484.

The spelling of 525455901 in words is "five hundred twenty-five million, four hundred fifty-five thousand, nine hundred one".