2521629245 has 8 divisors (see below), whose sum is σ = 3026700600. Its totient is φ = 2016806400.

The previous prime is 2521629223. The next prime is 2521629247. The reversal of 2521629245 is 5429261252.

It can be written as a sum of positive squares in 4 ways, for example, as 295771204 + 2225858041 = 17198^2 + 47179^2 .

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

It is not a de Polignac number, because 2521629245 - 2¹⁴ = 2521612861 is a prime.

It is a super-2 number, since 2×2521629245² = 12717228098478540050, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2521629199 and 2521629208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521629247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39020 + ... + 81029.

It is an arithmetic number, because the mean of its divisors is an integer number (378337575).

Almost surely, 2^2521629245 is an apocalyptic number.

It is an amenable number.

2521629245 is a deficient number, since it is larger than the sum of its proper divisors (505071355).

2521629245 is a wasteful number, since it uses less digits than its factorization.

2521629245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124255.

The product of its digits is 86400, while the sum is 38.

The square root of 2521629245 is about 50215.8266386206. The cubic root of 2521629245 is about 1361.1116280819. Note that the first 3 decimals are identical.

The spelling of 2521629245 in words is "two billion, five hundred twenty-one million, six hundred twenty-nine thousand, two hundred forty-five".