525121245 has 192 divisors, whose sum is σ = 1139927040. Its totient is φ = 228096000.

The previous prime is 525121231. The next prime is 525121273. The reversal of 525121245 is 542121525.

525121245 is a `hidden beast` number, since 525 + 12 + 124 + 5 = 666.

It is not a de Polignac number, because 525121245 - 2¹¹ = 525119197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 8608515 + ... + 8608575.

It is an arithmetic number, because the mean of its divisors is an integer number (5937120).

Almost surely, 2^525121245 is an apocalyptic number.

525121245 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

525121245 is an abundant number, since it is smaller than the sum of its proper divisors (614805795).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

525121245 is a wasteful number, since it uses less digits than its factorization.

525121245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145 (or 128 counting only the distinct ones).

The product of its digits is 4000, while the sum is 27.

The square root of 525121245 is about 22915.5241048508. The cubic root of 525121245 is about 806.7764198691.

The spelling of 525121245 in words is "five hundred twenty-five million, one hundred twenty-one thousand, two hundred forty-five".