252525247 has 4 divisors (see below), whose sum is σ = 271950280. Its totient is φ = 233100216.

The previous prime is 252525223. The next prime is 252525263. The reversal of 252525247 is 742525252.

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 252525247 - 2²³ = 244136639 is a prime.

It is a super-2 number, since 2×252525247² = 127538000744822018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252525347) 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, 9712497 + ... + 9712522.

It is an arithmetic number, because the mean of its divisors is an integer number (67987570).

Almost surely, 2^252525247 is an apocalyptic number.

252525247 is a deficient number, since it is larger than the sum of its proper divisors (19425033).

252525247 is a wasteful number, since it uses less digits than its factorization.

252525247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19425032.

The product of its digits is 56000, while the sum is 34.

The square root of 252525247 is about 15891.0429802452. The cubic root of 252525247 is about 632.0744976741.

It can be divided in two parts, 2525 and 25247, that added together give a palindrome (27772).

The spelling of 252525247 in words is "two hundred fifty-two million, five hundred twenty-five thousand, two hundred forty-seven".