2525621369257 has 4 divisors (see below), whose sum is σ = 2886424422016. Its totient is φ = 2164818316500.

The previous prime is 2525621369239. The next prime is 2525621369309. The reversal of 2525621369257 is 7529631265252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-2525621369257 is a prime.

It is a super-3 number, since 3×2525621369257³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2525621369198 and 2525621369207.

It is not an unprimeable number, because it can be changed into a prime (2525621369237) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 180401526369 + ... + 180401526382.

It is an arithmetic number, because the mean of its divisors is an integer number (721606105504).

Almost surely, 2^{2525621369257} is an apocalyptic number.

It is an amenable number.

2525621369257 is a deficient number, since it is larger than the sum of its proper divisors (360803052759).

2525621369257 is an equidigital number, since it uses as much as digits as its factorization.

2525621369257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360803052758.

The product of its digits is 13608000, while the sum is 55.

The spelling of 2525621369257 in words is "two trillion, five hundred twenty-five billion, six hundred twenty-one million, three hundred sixty-nine thousand, two hundred fifty-seven".