121525345250 has 16 divisors (see below), whose sum is σ = 227495446776. Its totient is φ = 48610138000.

The previous prime is 121525345247. The next prime is 121525345283. The reversal of 121525345250 is 52543525121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17105239369 + 104420105881 = 130787^2 + 323141^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 121525345250.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243050441 + ... + 243050940.

Almost surely, 2^121525345250 is an apocalyptic number.

121525345250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121525345250 is a deficient number, since it is larger than the sum of its proper divisors (105970101526).

121525345250 is an equidigital number, since it uses as much as digits as its factorization.

121525345250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486101398 (or 486101388 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 35.

The spelling of 121525345250 in words is "one hundred twenty-one billion, five hundred twenty-five million, three hundred forty-five thousand, two hundred fifty".