525125250 has 144 divisors (see below), whose sum is σ = 1538680104. Its totient is φ = 129168000.

The previous prime is 525125231. The next prime is 525125261. The reversal of 525125250 is 52521525.

525125250 is a `hidden beast` number, since 52 + 512 + 52 + 50 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 180391761 + 344733489 = 13431^2 + 18567^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 379560 + ... + 380940.

Almost surely, 2^525125250 is an apocalyptic number.

525125250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 525125250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (769340052).

525125250 is an abundant number, since it is smaller than the sum of its proper divisors (1013554854).

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

525125250 is a wasteful number, since it uses less digits than its factorization.

525125250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430 (or 1404 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The square root of 525125250 is about 22915.6114908592. The cubic root of 525125250 is about 806.7784709074.

Adding to 525125250 its reverse (52521525), we get a palindrome (577646775).

The spelling of 525125250 in words is "five hundred twenty-five million, one hundred twenty-five thousand, two hundred fifty".