251223503325 has 24 divisors (see below), whose sum is σ = 429678823200. Its totient is φ = 129365664960.

The previous prime is 251223503291. The next prime is 251223503359. The reversal of 251223503325 is 523305322152.

It is an interprime number because it is at equal distance from previous prime (251223503291) and next prime (251223503359).

It is not a de Polignac number, because 251223503325 - 2⁹ = 251223502813 is a prime.

It is a super-2 number, since 2×251223503325² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57750355 + ... + 57754704.

It is an arithmetic number, because the mean of its divisors is an integer number (17903284300).

Almost surely, 2^251223503325 is an apocalyptic number.

251223503325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

251223503325 is a deficient number, since it is larger than the sum of its proper divisors (178455319875).

251223503325 is a wasteful number, since it uses less digits than its factorization.

251223503325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115505101 (or 115505096 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 33.

Adding to 251223503325 its reverse (523305322152), we get a palindrome (774528825477).

The spelling of 251223503325 in words is "two hundred fifty-one billion, two hundred twenty-three million, five hundred three thousand, three hundred twenty-five".