525890923 has 4 divisors (see below), whose sum is σ = 526156000. Its totient is φ = 525625848.

The previous prime is 525890921. The next prime is 525890927. The reversal of 525890923 is 329098525.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 525890923 - 2¹ = 525890921 is a prime.

It is a super-2 number, since 2×525890923² = 553122525787583858, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 525890923.

It is not an unprimeable number, because it can be changed into a prime (525890921) 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, 129540 + ... + 133537.

It is an arithmetic number, because the mean of its divisors is an integer number (131539000).

Almost surely, 2^525890923 is an apocalyptic number.

525890923 is a deficient number, since it is larger than the sum of its proper divisors (265077).

525890923 is a wasteful number, since it uses less digits than its factorization.

525890923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265076.

The product of its (nonzero) digits is 194400, while the sum is 43.

The square root of 525890923 is about 22932.3117674603. The cubic root of 525890923 is about 807.1703955027.

The spelling of 525890923 in words is "five hundred twenty-five million, eight hundred ninety thousand, nine hundred twenty-three".