10251212520 has 32 divisors (see below), whose sum is σ = 30753637920. Its totient is φ = 2733656640.

The previous prime is 10251212501. The next prime is 10251212527. The reversal of 10251212520 is 2521215201.

It is not an unprimeable number, because it can be changed into a prime (10251212527) 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, 42713266 + ... + 42713505.

It is an arithmetic number, because the mean of its divisors is an integer number (961051185).

Almost surely, 2^10251212520 is an apocalyptic number.

10251212520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10251212520 is an abundant number, since it is smaller than the sum of its proper divisors (20502425400).

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

10251212520 is a wasteful number, since it uses less digits than its factorization.

10251212520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85426785 (or 85426781 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

Adding to 10251212520 its reverse (2521215201), we get a palindrome (12772427721).

The spelling of 10251212520 in words is "ten billion, two hundred fifty-one million, two hundred twelve thousand, five hundred twenty".