215051251425 has 24 divisors (see below), whose sum is σ = 355886013504. Its totient is φ = 114586061760.

The previous prime is 215051251417. The next prime is 215051251447. The reversal of 215051251425 is 524152150512.

It is not a de Polignac number, because 215051251425 - 2³ = 215051251417 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1268982 + ... + 1428431.

It is an arithmetic number, because the mean of its divisors is an integer number (14828583896).

Almost surely, 2^215051251425 is an apocalyptic number.

215051251425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

215051251425 is a deficient number, since it is larger than the sum of its proper divisors (140834762079).

215051251425 is a wasteful number, since it uses less digits than its factorization.

215051251425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2698489 (or 2698484 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 33.

The spelling of 215051251425 in words is "two hundred fifteen billion, fifty-one million, two hundred fifty-one thousand, four hundred twenty-five".