525020690 has 16 divisors (see below), whose sum is σ = 1000627992. Its totient is φ = 197654784.

The previous prime is 525020689. The next prime is 525020693. The reversal of 525020690 is 96020525.

It can be written as a sum of positive squares in 4 ways, for example, as 366990649 + 158030041 = 19157^2 + 12571^2 .

It is a super-2 number, since 2×525020690² = 551293449856152200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (525020693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1544009 + ... + 1544348.

Almost surely, 2^525020690 is an apocalyptic number.

525020690 is a deficient number, since it is larger than the sum of its proper divisors (475607302).

525020690 is a wasteful number, since it uses less digits than its factorization.

525020690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3088381.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 525020690 is about 22913.3299631459. The cubic root of 525020690 is about 806.7249202822.

The spelling of 525020690 in words is "five hundred twenty-five million, twenty thousand, six hundred ninety".