525867901 has 4 divisors (see below), whose sum is σ = 566319292. Its totient is φ = 485416512.

The previous prime is 525867899. The next prime is 525867907. The reversal of 525867901 is 109768525.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 182655225 + 343212676 = 13515^2 + 18526^2 .

It is a cyclic number.

It is not a de Polignac number, because 525867901 - 2¹ = 525867899 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 (525867907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20225676 + ... + 20225701.

It is an arithmetic number, because the mean of its divisors is an integer number (141579823).

Almost surely, 2^525867901 is an apocalyptic number.

It is an amenable number.

525867901 is a deficient number, since it is larger than the sum of its proper divisors (40451391).

525867901 is a wasteful number, since it uses less digits than its factorization.

525867901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40451390.

The product of its (nonzero) digits is 151200, while the sum is 43.

The square root of 525867901 is about 22931.8098064675. The cubic root of 525867901 is about 807.1586167940.

The spelling of 525867901 in words is "five hundred twenty-five million, eight hundred sixty-seven thousand, nine hundred one".