525221045 has 8 divisors (see below), whose sum is σ = 634132896. Its totient is φ = 417598416.

The previous prime is 525221027. The next prime is 525221063. The reversal of 525221045 is 540122525.

It is an interprime number because it is at equal distance from previous prime (525221027) and next prime (525221063).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 525221045 - 2⁶ = 525220981 is a prime.

It is a super-2 number, since 2×525221045² = 551714292221784050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321407 + ... + 323036.

It is an arithmetic number, because the mean of its divisors is an integer number (79266612).

Almost surely, 2^525221045 is an apocalyptic number.

It is an amenable number.

525221045 is a deficient number, since it is larger than the sum of its proper divisors (108911851).

525221045 is a wasteful number, since it uses less digits than its factorization.

525221045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644611.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 525221045 is about 22917.7015645112. The cubic root of 525221045 is about 806.8275262801.

The spelling of 525221045 in words is "five hundred twenty-five million, two hundred twenty-one thousand, forty-five".